For Linux Portable — Download Patched Questasim

How to download QuestaSim for Linux (portable)

Important note: QuestaSim (part of Siemens EDA, formerly Mentor Graphics) is proprietary commercial software that requires a valid license. This guide describes how to obtain the official Linux installer and run it in a portable fashion (no system-wide install), assuming you have a valid license.

1. Obtain a license and account

• Ensure you have a valid QuestaSim/ModelSim license (purchase or academic license).
• If you represent an organization, request access from your license administrator.
• Create or log into your Siemens EDA account (formerly Mentor Graphics) if required by your license.

2. Download the official Linux installer

• Log in to the Siemens EDA support/download site with your account.
• Locate QuestaSim (or ModelSim/Questa Advanced) product page.
• Select the Linux distribution installer for your product/version and architecture (x86_64).
• Download the installer archive (typically a .tar.gz or .sh installer). Note the filename and download location.

3. Prepare a portable installation directory

• Choose a directory where you have full read/write access (e.g., /home/youruser/questa_portable or an external drive).
• Create the directory:

  mkdir -p ~/questa_portable
  cd ~/questa_portable
  

4. Extract or run the installer without system-wide changes

• If the download is a .tar.gz archive:

  tar -xzf /path/to/questa_<version>_linux.tar.gz -C ~/questa_portable
  

  This will unpack the product files into your portable directory.
• If the download is a self-extracting .sh installer:

  chmod +x Questa_<version>_linux_installer.sh
  ./Questa_<version>_linux_installer.sh --target ~/questa_portable --nox11 --nouser
  

  (Installer options vary by version — use the installer's --help to find non-root or custom-target options.)
• If the installer defaults to system directories, choose custom installation paths when prompted and avoid /opt or /usr locations.

5. Configure environment variables locally

• Create a small shell script to set environment variables when you want to use QuestaSim:

  # ~/questa_portable/env_questa.sh
  export QUESTASIM_DIR="$HOME/questa_portable/questa<version>"
  export PATH="$QUESTASIM_DIR/bin:$PATH"
  export LM_LICENSE_FILE=27000@license-server-host   # or path to local license file
  export VLPATH="$QUESTASIM_DIR/lib"                 # if required by your version
  

• Source this script before running QuestaSim:

  source ~/questa_portable/env_questa.sh
  vsim
  

6. Licensing options for portable use

• Network license server: set LM_LICENSE_FILE to point to your license server (e.g., 27000@licenseserver).
• Local license file: if your license permits, place the license file in the portable directory and point LM_LICENSE_FILE to it (full path).
• Floating licenses require network access to the license server.

7. Running QuestaSim from the portable directory

• After sourcing env_questa.sh, run the GUI:

  vsim &
  

• Or run batch commands:

  vlog file.sv
  vsim -c -do "run -all"
  

8. Making the installation truly portable (optional)

• Use relative paths in your env script if you move the portable directory between machines:

  export QUESTASIM_DIR="$(cd "$(dirname "$BASH_SOURCE[0]")"/.. && pwd)/questa<version>"
  

• Ensure the target machines have compatible glibc and required libraries; QuestaSim is not statically linked and may fail on very old or very new distributions.
• If needed, bundle required shared libraries in a lib/ subdirectory and use LD_LIBRARY_PATH in the env script:

  export LD_LIBRARY_PATH="$QUESTASIM_DIR/lib:$LD_LIBRARY_PATH"
  

9. Troubleshooting

• If binary fails with "GLIBCXX" or similar errors, the host's libstdc++ version is incompatible — use a compatible host or provide required libs.
• Permissions: ensure executables are executable (chmod +x).
• License errors: verify LM_LICENSE_FILE and network connectivity to license server.
• Use the installer log or support resources from Siemens EDA for product-specific issues.

10. Legal and support considerations

• Do not redistribute the installer or product files beyond what your license permits.
• For official support, updates, and patches, use Siemens EDA support channels.

If you want, I can:

• provide exact installer filenames and typical installer options for a specific QuestaSim version (tell me the version), or
• generate a ready-to-run env_questa.sh tailored to your version and license type.

The pursuit of high-performance digital simulation often leads engineers to QuestaSim, a premier tool for Verilog, SystemVerilog, and VHDL verification. While Siemens EDA typically provides QuestaSim through a formal installation process involving complex directory structures and environment variables, the concept of a portable Linux version has become highly desirable. A portable installation allows engineers to maintain a consistent verification environment across different machines without the need for root privileges or repetitive installation steps. Achieving this requires a deep understanding of Linux library dependencies, license management, and shell configuration.

The primary challenge in creating or obtaining a portable version of QuestaSim for Linux lies in its reliance on shared system libraries. Like most EDA tools, QuestaSim is compiled against specific versions of libraries such as glibc, libX11, and various motif packages. On a standard installation, these are managed by the OS package manager. To make the software portable, one must use a "bundled" approach, where all necessary .so files are contained within the application folder. Tools like AppImage or simple wrapper scripts that modify the LD_LIBRARY_PATH are commonly employed to ensure the binaries look within their own directory for dependencies rather than the host system's /usr/lib folders.

Beyond the binaries themselves, the licensing mechanism is the most significant hurdle for portability. QuestaSim utilizes the FlexNet Publisher (FlexLM) system, which typically anchors a license to a specific hardware MAC address or a Host ID. For a truly portable setup, users often utilize a floating license server. In this configuration, the portable QuestaSim folder contains a pointer—usually the MGLS_LICENSE_FILE environment variable—to a central server. This allows the user to move the software folder to any machine on the network, execute the simulator, and check out a license dynamically, fulfilling the requirement of mobility without violating compliance.

Setting up the environment is the final step in the portability workflow. Since a portable version does not integrate with the system path, a "sourcable" shell script is essential. This script should define the QUESTASIM_HOME, update the PATH to include the compiler and simulator executables (vlog, vcom, vsim), and set the necessary locale variables to prevent font or display errors in the graphical user interface. By encapsulating these settings in a single script, the user can initialize the entire toolchain in seconds on any compatible Linux distribution.

In conclusion, while a "downloadable" portable version of QuestaSim is rarely provided directly by the vendor, it is a configuration that can be engineered through careful file management and environment tuning. The ability to run such a powerful simulation suite from a USB drive or a synced cloud folder provides immense flexibility for hardware designers. However, users must remain diligent regarding library compatibility between different Linux kernels and ensure that their licensing solution supports a mobile infrastructure. As remote work and decentralized engineering teams become the norm, the demand for these portable EDA environments will only continue to grow.

QuestaSim does not offer an official "portable" version (like a single-file executable) for Linux. However, it can be made portable by manually extracting and managing the installation directory or by using containerization like Docker to avoid dependency conflicts across different distributions. Portability & Installation Review

Because QuestaSim is a commercial tool with complex library dependencies, true portability requires specific setups:

Extraction Method: You can download the latest installer files—often identified as .tgz or .aol files—and extract them using tools like tar xfva. This creates a standalone directory that can theoretically be moved between systems, provided the target system has the necessary libraries.

System Compatibility: QuestaSim is a modern 64-bit software, but it often requires specific 32-bit libraries (e.g., libxft2:i386, lib32ncurses6) to run correctly on modern distributions like Ubuntu or Arch Linux.

The Docker Solution: For a truly portable experience that works on any Linux OS, users often recommend Docker. This encapsulates the required OS environment and libraries, preventing the "dependency hell" that occurs when moving the software between different Linux distributions. User Experience & Performance

Users typically find QuestaSim to be a robust successor to ModelSim, though it has high licensing and setup requirements.

“QuestaSim is Intel's successor to ModelSim... modern, 64-bit software. Since QuestaSim shares most of its CLI with ModelSim, you can nearly use Questa as a drop-in replacement.” Machine Intelligence Laboratory (MIL)

“Questa is officially supported on Redhat EL and Suse ES, however, in my experience it works on most if not all distros... Questa is available for both 32 and 64bits platform.” SIEMENS Community · 4 years ago Key Considerations

Licensing: Even with a portable file structure, the software requires a valid license (e.g., license.dat) and specific environment variables like LM_LICENSE_FILE to function.

Editions: You can download the Questa Starter Edition through the Intel Download Center, which is often used for academic or light non-commercial learning. Running Questasim on any OS through Docker - REDS blog

QuestaSim is a commercial EDA tool and does not have an official "portable" version for Linux in the way consumer apps do. However, you can achieve portability by installing it to a standalone directory and using environment variables or Docker to run it across different Linux machines. 1. Obtain the Official Installer

To get the legitimate Linux installer, you must have a registered account with Siemens (formerly Mentor Graphics) or a partner like Intel.

Siemens Support Center: Log in to the Siemens Support Portal to download the .aol or .run installation files.

Intel FPGA Edition: If using the Altera/Intel version, you can download it from the Intel FPGA Download Center as part of the Quartus bundle. 2. "Portable" Installation Steps

To make the installation portable (e.g., on a removable drive), install it into a single folder rather than system directories like /opt.

Prepare the Installer: Set execution permissions on your downloaded installer file: chmod +x questa_sim-xxxx.x_x.aol Use code with caution. Copied to clipboard

Run the Installation: Execute the installer and choose a custom, self-contained path (e.g., /media/usb/questasim): ./questa_sim-xxxx.x_x.aol Use code with caution. Copied to clipboard

Install Required Dependencies: Linux distros like Ubuntu may need specific 32-bit and 64-bit libraries to run the binaries:

sudo apt install libxft2 libxft2:i386 lib32ncurses6 libxext6 libxext6:i386 Use code with caution. Copied to clipboard 3. Setup for Cross-Machine Use

Since Questasim isn't "portable" by default, you must manually point your system to the installation folder on each new machine using a script.

Create a script (e.g., run_questa.sh) in your installation folder:

#!/bin/bash # Update these paths to where your portable folder is mounted QUESTA_HOME="/path/to/your/portable/questasim" export PATH="$QUESTA_HOME/linux_x86_64:$PATH" export LM_LICENSE_FILE="$QUESTA_HOME/license.dat:$LM_LICENSE_FILE" # Launch Questasim vsim Use code with caution. Copied to clipboard 4. Alternative: Docker (True Portability)

For a truly portable environment that ignores host OS library conflicts, use a Docker container. Create a Dockerfile with a base RHEL or Ubuntu image. download questasim for linux portable

Install necessary libraries and copy your Questasim folder into the image.

Run the container on any Linux machine with Docker installed to ensure the environment is identical every time.

Do you need help generating a specific Dockerfile to containerize your Questasim installation?

Install Mentor Graphics Questasim 2021.2 on Ubuntu 24.04 LTS

To set up QuestaSim for Linux in a "portable" fashion, you can avoid system-wide installation by using Docker or a standalone local directory setup.

Here is a full blog post covering the download, setup, and "portable" configuration for Linux. How to Set Up QuestaSim for Linux: The Portable Guide

Running high-end EDA tools like QuestaSim on modern Linux distributions can be a headache due to library conflicts. Whether you're moving between workstations or want to keep your OS clean, a portable setup is the best way to go.

In this guide, we'll cover how to download and configure QuestaSim for Linux without "installing" it in the traditional, system-cluttering sense. ⚡ The "Portable" Strategy True portability in Linux comes from two methods:

Local Directory Setup: Keeping the entire installation in a single folder (e.g., /opt/questasim) and using script-based environment variables.

Docker Containers: The ultimate portability. Package QuestaSim and its specific library dependencies into an image that runs on any distro. 📥 Step 1: Download Questasim

Siemens (formerly Mentor Graphics) does not provide a direct public "portable.zip" file. You must download the installer from an official source:

Intel FPGA Edition: The most common way for students and hobbyists to get Questasim is via the Intel FPGA Download Center. Look for "Questa*-Intel® FPGA Edition".

Siemens Support Center: Professional users can download the full version from the Siemens EDA Support Portal. File types to look for: .run (Self-extracting installer) .aol (Mentor Graphics install format) 🛠️ Step 2: Portable Installation (Local Folder)

Instead of installing to /usr/local, choose a dedicated path like ~/eda/questasim. 1. Install Dependencies

Questasim is often 64-bit now, but older versions or specific sub-tools still require 32-bit libraries.

# Example for Ubuntu/Debian sudo apt install libxft2 libxext6 libncurses5 Use code with caution. Copied to clipboard 2. Run the Installer Launch the installer and point it to your local directory.

chmod +x QuestaSetup-linux.run ./QuestaSetup-linux.run --mode folder --prefix ~/eda/questasim Use code with caution. Copied to clipboard 🚀 Step 3: Making it "Portable" via Scripts

To make it portable, you don't want to edit your ~/.bashrc permanently. Instead, create a wrapper script (run_questa.sh) inside your folder:

#!/bin/bash # run_questa.sh PORTABLE_ROOT=$(pwd) export PATH="$PORTABLE_ROOT/questasim/linux_x86_64:$PATH" export LM_LICENSE_FILE="$PORTABLE_ROOT/license.dat" vsim "$@" Use code with caution. Copied to clipboard

Now, you can move the entire folder to another machine and just run ./run_questa.sh. 🐳 Step 4: The Docker Approach (Highly Recommended)

If you want to run QuestaSim on a modern distro (like Ubuntu 24.04) without worrying about old library dependencies, use Docker.

Create a Dockerfile that uses an older, stable base like Ubuntu 18.04 or 20.04.

Mount your project as a volume so your code stays on your host machine while the simulator runs inside the container. 💡 Quick Tips for Success

License Path: Always use an absolute path in your LM_LICENSE_FILE variable to avoid "License not found" errors when switching directories.

Check vsim: Run vsim -version immediately after setup to verify that all shared libraries (.so files) are correctly linked.

Portable Stimulus: If you're doing advanced verification, check out the built-in Portable Stimulus capabilities to reuse test scenarios across platforms.

If you'd like to see a specific Dockerfile template or need help troubleshooting a specific library error, let me know! I can also help you draft the license request email for the Intel/Altera version. Running Questasim on any OS through Docker - REDS blog

How to Get QuestaSim for Linux: A Guide to Portable Environments

For FPGA designers and verification engineers working in Linux environments, QuestaSim is the gold standard for HDL simulation. However, the traditional installation process can be heavy, tied to specific root directories, and difficult to move between machines. How to download QuestaSim for Linux (portable) Important

If you are looking for a way to "download QuestaSim for Linux portable" style—meaning an installation that is flexible, dependency-contained, and easy to deploy—this guide covers the essential steps and best practices. What is QuestaSim?

QuestaSim, developed by Siemens EDA (formerly Mentor Graphics), is the advanced version of ModelSim. It supports the latest standards in SystemVerilog, VHDL, and Mixed-Signal simulation, offering high-performance verification for complex SoC designs. Why a Portable Approach for Linux?

In a professional Linux environment, you often face several challenges:

Version Conflicts: Different projects may require different versions of Questa.

Dependency Issues: Older versions of Questa might require deprecated libraries (libncurses5, etc.) that aren't available on modern distros like Ubuntu 22.04 or Fedora.

Permissions: You might not have sudo access to install software in /opt.

A "portable" setup allows you to keep the entire toolchain in a single directory or a container, making it easy to share across a team or move between a workstation and a server. 1. Where to Download QuestaSim

Siemens EDA does not provide a "portable .zip" in the traditional consumer sense. To get the official binaries: Visit the Siemens Support Center. Navigate to the Questa Software Download section. Select the Linux 64-bit version. Download the .run or .bin installer.

Note: You must have a valid license or a student/evaluation account to access these files. 2. Making QuestaSim Portable

To achieve a portable-like behavior on Linux, follow these steps: A. The "Local Folder" Installation

When running the installer, do not install to /opt/mgc. Instead, point the installation directory to a path within your home folder or a dedicated tools partition, such as:~/tools/questasim_2023.2 B. Bundling Dependencies

QuestaSim often relies on specific 32-bit or older 64-bit libraries. To make it truly portable across different Linux distros:

Identify missing libraries using ldd on the Questa binaries (e.g., ldd vsim).

Copy necessary .so files into a libs folder within your Questa directory. Use an environment script to point to these libraries. C. Creating an Environment Wrapper

Instead of modifying your ~/.bashrc, create a script named questa_init.sh inside the folder:

export MGC_HOME=$PWD export PATH=$MGC_HOME/bin:$PATH export LM_LICENSE_FILE=1717@your_license_server # Optional: Point to bundled libs # export LD_LIBRARY_PATH=$MGC_HOME/libs:$LD_LIBRARY_PATH echo "QuestaSim Environment Loaded." Use code with caution.

To run the tool, simply navigate to the folder and type source questa_init.sh && vsim. 3. The Modern Solution: Docker/Apptainer

The ultimate "portable" version of QuestaSim on Linux is a Container. By containerizing Questa, you package the OS, the libraries, and the tool into one image. Portability: Run the same image on Ubuntu, CentOS, or Arch.

Isolation: No need to clutter your host system with legacy libraries.

Deployment: Simply docker pull your verification environment onto any server. 4. Key Considerations

Licensing: Even a portable installation requires a license. Most users use a FlexLM license server. Ensure your portable environment has network access to the server.

Drivers: If you are using Questasim’s hardware acceleration features, you may still need specific kernel drivers installed on the host machine. Conclusion

While there is no official "Questasim Portable" executable, you can create a highly mobile and flexible environment by using local directory installations, custom wrapper scripts, or Docker containers. This ensures your verification workflow remains consistent regardless of the Linux distribution you are using.

While there is no official "portable" version of QuestaSim for Linux released by Siemens, the software can be made effectively portable by installing it to a specific directory and setting the necessary environment variables manually. Summary of QuestaSim for Linux

QuestaSim is a high-performance functional simulator primarily used for SoC, ASIC, and FPGA designs. It is a commercial tool and generally requires a paid license from Siemens. Key Observations Portability: Standard installations involve a setup wizard or a

installer script that extracts files into a chosen directory. You can move this directory across different Linux machines provided all dependencies are met. Dependencies:

Running QuestaSim on modern Linux distributions (like Ubuntu or Arch) requires specific libraries such as lib32ncurses6 Licensing:

Even if the files are portable, the software requires a valid license.dat file and a license server or environment variable ( LM_LICENSE_FILE ) to function. FPGA Editions: Free versions, like the Questa*-Intel FPGA Starter Edition

, are available through FPGA vendors but may have performance limitations compared to the full commercial version. How to Create a "Portable" Setup Questa One Sim | Siemens Obtain a license and account

Downloading and Installing QuestaSim for Linux: A Portable Approach

QuestaSim is a popular simulation and debugging tool used in the field of electronic design automation (EDA). It is widely used by engineers and designers to simulate and verify digital circuits. In this article, we will guide you through the process of downloading and installing QuestaSim on Linux, with a focus on a portable approach.

What is QuestaSim?

QuestaSim is a software tool developed by Mentor Graphics, a leading provider of EDA solutions. It is used for simulating and debugging digital circuits, including VHDL, Verilog, and mixed-language designs. QuestaSim provides a comprehensive set of features, including simulation, debugging, and analysis tools, to help designers verify and validate their digital designs.

Why Portable QuestaSim on Linux?

Linux is a popular operating system used by many engineers and designers. Having a portable version of QuestaSim on Linux provides several benefits, including:

• Flexibility: A portable version of QuestaSim can be run on any Linux machine without requiring installation or administrative privileges.
• Convenience: You can run QuestaSim on any Linux machine, without worrying about compatibility issues or software dependencies.
• Security: A portable version of QuestaSim can be run from a USB drive or a network share, reducing the risk of software installation and data storage.

Downloading QuestaSim for Linux

To download QuestaSim for Linux, follow these steps:

1. Create an account: Go to the Mentor Graphics website (www.mentor.com) and create an account if you don't already have one.
2. Request a trial: Click on the "Try/Download" button on the Mentor Graphics website and request a trial for QuestaSim.
3. Select Linux as your platform: Choose Linux as your platform and select the version of QuestaSim you want to download (e.g., QuestaSim 10.6).
4. Download the installer: Download the QuestaSim installer for Linux (e.g., questa_sim_10.6_linux.tgz).

Installing QuestaSim on Linux (Portable Approach)

To install QuestaSim on Linux in a portable manner, follow these steps:

1. Extract the installer: Extract the downloaded installer using the tar command: tar -xvf questa_sim_10.6_linux.tgz
2. Create a portable directory: Create a new directory for your portable QuestaSim installation (e.g., questa_sim_portable).
3. Copy the extracted files: Copy the extracted files to your portable directory: cp -r questa_sim_10.6/* questa_sim_portable/
4. Set environment variables: Set the LM_LICENSE_FILE and MENTOR_GRAPHICS environment variables to point to your portable directory: export LM_LICENSE_FILE=/path/to/questa_sim_portable/license.dat and export MENTOR_GRAPHICS=/path/to/questa_sim_portable

Running QuestaSim on Linux (Portable)

To run QuestaSim on Linux in a portable manner, follow these steps:

1. Navigate to the portable directory: Navigate to your portable QuestaSim directory: cd questa_sim_portable
2. Run the QuestaSim executable: Run the QuestaSim executable: ./questa_sim

Conclusion

In this article, we have guided you through the process of downloading and installing QuestaSim on Linux, with a focus on a portable approach. By following these steps, you can run QuestaSim on any Linux machine without requiring installation or administrative privileges. This portable approach provides flexibility, convenience, and security, making it an ideal solution for engineers and designers who need to simulate and debug digital circuits on the go.

Additional Tips and Tricks

• Make sure to check the system requirements for QuestaSim on Linux before downloading and installing.
• Use a USB drive or a network share to store your portable QuestaSim installation for easy access.
• Consider using a license server to manage your QuestaSim licenses and reduce administrative overhead.

References

• Mentor Graphics website: www.mentor.com
• QuestaSim user manual: www.mentor.com/products/eda/questa-sim

By following these steps and tips, you can successfully download, install, and run QuestaSim on Linux in a portable manner. Happy simulating!

Here’s a detailed, critical review of downloading a portable Linux version of QuestaSim (Siemens EDA’s advanced simulation tool, often used for SystemVerilog, UVM, and mixed-signal design).

Part 3: Step-by-Step – Creating Your Own Portable QuestaSim Environment

Assuming you have legal access to QuestaSim Linux installer, here is how you can turn it into a portable installation.

Step 5 – Full Portability Tips

• Use relative paths inside the startup script (e.g., export QUESTA_HOME=$(dirname $0))
• Bundle libraries with patchelf if moving to different Linux distros
• Store license file inside the portable folder and use export LM_LICENSE_FILE=$QUESTA_HOME/license.dat

Part 8: Future – Will Siemens Ever Release a Portable Version?

EDA vendors are slowly moving toward containerization. Siemens now offers QuestaSim in the cloud (via Siemens Cloud EDA) and Docker images for CI/CD pipelines.

You can already:

• Pull a QuestaSim Docker image (if you have license).
• Use docker save to make it portable.
• Run on any Linux host with Docker installed.

This is the modern, practical "portable" solution.

Example:

docker pull siemens/questa:latest  # hypothetical
docker save -o questa.tar siemens/questa
# transfer questa.tar to another machine
docker load -i questa.tar

No need to "download questasim for linux portable" – you build portability into your workflow.

3. System Prerequisites (The "Gotcha")

QuestaSim is a hybrid application; even on a 64-bit Linux OS, many underlying components rely on 32-bit libraries. If you skip this, the installation will fail with a "No such file or directory" error on the executable.

Open your terminal and install the required architecture support.

For Ubuntu/Debian:

sudo dpkg --add-architecture i386
sudo apt-get update
sudo apt-get install build-essential
sudo apt-get install gcc-multilib g++-multilib
sudo apt-get install libxft2:i386 libxext6:i386 libncurses5:i386

For RedHat/CentOS/Fedora:

sudo yum install glibc.i686
sudo yum install libXft.i686 libXext.i686 ncurses-libs.i686