Lotus Program Guide For Pc

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This guide covers how to install the Lotus applications and launch a Lotus Node.. This guide covers installing lotus, lotus-miner and lotus-worker to your computer, and then runs through setting up a Lotus node. For information on running the miner, check the Lotus Miner documentation.

# Minimal requirements

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To run a Lotus node, your computer must have:

  • macOS or Linux installed. Windows is not yet supported.
  • 8-core CPU and 32 GiB RAM. Models with support for Intel SHA Extensions (AMD since Zen microarchitecture, or Intel since Ice Lake) will significantly speed things up.
  • Enough space to store the current Lotus chain (preferably on an SSD storage medium). The chain grows at approximately 12 GiB per week. The chain can be also synced from trusted state snapshots and compacted.

WARNING

These are the minimal requirements to run a Lotus node. Hardware requirements for Miners are different.

Lotus Program Guide For Pc

# Linux

The following instructions are specific to Linux installations. Head to the macOS section if you want to install Lotus on a Mac.

# Software dependencies

You will need the following software installed to install and run Lotus.

# System-specific

Building Lotus requires some system dependencies, usually provided by your distribution.

Arch:

Ubuntu/Debian:

Fedora:

OpenSUSE:

Amazon Linux 2:

# Rustup

Lotus needs rustup(opens new window). The easiest way to install it is:

TIP

Make sure your $PATH variable is correctly configured after the rustup installation so that cargo and rustc are found in their rustup-configured locations.

For

# Go

To build Lotus, you need a working installation of Go 1.15.5 or higher(opens new window):

Make sure that /usr/local/go/bin is in your PATH. If you are running into problems, check the official Go installation instructions(opens new window) for your operating system.

# Build and install Lotus

Once all the dependencies are installed, you can build and install the Lotus suite (lotus, lotus-miner, and lotus-worker).

Software
  1. Clone the repository:

  2. Checkout the branch corresponding to the network you want to join. If you want to run the latest version of Lotus on mainnet, checkout to the master branch. If you want to use a specific release, then see the Releases section in GitHub(opens new window).

    If you are changing networks from a previous Lotus installation or there has been a network reset, read the Switch networks guide before proceeding. You can look up the correct branch or tag for the network you want to join in the networks dashboard(opens new window):

    Currently, the master branch corresponds to mainnet.

  3. If you are in China, check out the specific tips.

  4. Depending on your CPU model, you will want to export additional environment variables:

    If you have an AMD Zen or Intel Ice Lake CPU (or later), enable the use of SHA extensions by adding these two environment variables:

    See the Native Filecoin FFI section for more details about this process.

    Some older Intel and AMD processors without the ADX instruction support may panic with illegal instruction errors. To fix this, add the CGO_CFLAGS environment variable:

    This is due to a Lotus bug that prevents Lotus from running on processor without adx instruction support, and should be fixed soon.

  5. Build and install Lotus:

    This will put lotus, lotus-miner and lotus-worker in /usr/local/bin.

    lotus will use the $HOME/.lotus folder by default for storage (configuration, chain data, wallets, etc). See advanced options for information on how to customize the Lotus folder.

  6. You should now have Lotus installed. You can now start the Lotus daemon.

# Native Filecoin FFI

Some newer CPU architectures like AMD's Zen and Intel's Ice Lake, have support for SHA extensions. Having these extensions enabled significantly speeds up your Lotus node. To make full use of your processor's capabilities, make sure you set the following variables before building from source:

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This method of building does not produce portable binaries. Make sure you run the binary on the same computer as you built it.

# Systemd service files

Lotus provides generic Systemd service files. They can be installed with:

WARNING

Provided service files should be inspected and edited according to user needs as they are very generic and may lack specific environment variabes and settings needed by the users.

One example is that logs are redirected to files in /var/log/lotus by default and not visible in journalctl.

# macOS

These instructions are specific to macOS. If you are installing Lotus on a Linux distribution, head over to the Linux section.

# XCode Command Line Tools

Lotus requires that X-Code CLI tools be installed before building the Lotus binaries.

  1. Check if you already have the XCode Command Line Tools installed via the CLI, run:

    If this command returns a path, you can move on to the next step. Otherwise, to install via the CLI, run:

  2. To update, run:

# Install Homebrew

We recommend that MacOS users use Homebrew(opens new window) to install each of the necessary packages.

  1. Use the command brew install to install the following packages:

  2. Clone the repository:

  3. Checkout the branch corresponding to the network you want to join. If you are changing networks from a previous Lotus installation or there has been a network reset, read the Switch networks guide before proceeding. You can look up the correct branch or tag for the network you want to join in the networks dashboard(opens new window):

    Currently, the master branch corresponds to mainnet.

  4. If you are in China, check out the specific tips.

  5. Some older Intel and AMD processors without the ADX instruction support may panic with illegal instruction errors. To fix this, add the CGO_CFLAGS environment variable:

    This is due to a Lotus bug that prevents Lotus from running on processor without adx instruction support, and should be fixed soon.

  6. Build Lotus:

  7. You should now have Lotus installed. You can now start the Lotus daemon.

# Start the Lotus daemon and sync the chain

The lotus application runs as a daemon and a client to control and interact with that daemon. A daemon is a long-running program that is usually run in the background.

When using mainnet, we recommend to start the daemon syncing from a trusted state snapshot:

During the first run, Lotus will:

  • Setup its data folder at ~/.lotus.
  • Download the necessary proof parameters. This is a few gigabytes of data that is downloaded once.
  • Import the snapshot (if specified) and start syncing the Lotus chain.

The daemon will start producing lots of log messages right away. From this point, you will have to work on a new terminal and lotus commands will communicate with the running daemon.

TIP

Do not be concerned by the number of warnings and sometimes errors showing in the logs. They are a normal part of the daemon lifecycle as it participates in the global distributed consensus network.

If you used snapshots, subsequent daemon starts can proceed as normal without any options:

For more information about syncing and snapshots, see the Chain management section.

We recommend waiting until the syncing process has completed, which should be relatively fast when using trusted state snapshot imports:

# Interact with the daemon

The lotus command allows you to interact with a running Lotus daemon. The lotus-miner and lotus-worker commands work in the same way.

Lotus comes with built-in CLI documentation:

For example, after your Lotus daemon has been running for a few minutes, use lotus to check the number of other peers that it is connected to in the Filecoin network:

# Stop the Lotus daemon

In order to gracefully stop the running lotus daemon (required when restarting the daemon to update Lotus), use the following command:

Computer simulation is a key part of the automotive development process. Lotus Engineering Software has been developed by automotive engineers, using them on many powertrain and vehicle projects at Lotus over the past 20 years.

The philosophy under-pinning Lotus Engineering Software is to offer simulation tools which enable the user to generate models very quickly, using a mixture of embedded design criteria and well-structured interface functionality.

To purchase any of our products or for further information contact us by email. [email protected]

Computers

Products

To purchase any of the software below or for further information contact us by email. [email protected]

Lotus Suspension Analysis (SHARK)

A market leading application for suspension modelling and design from the world-leaders in vehicle ride and handling; the Lotus Suspension Analysis SHARK module is a suspension geometric and kinematic modelling tool, with a user- friendly interface which makes it easy to apply changes to proposed geometry and instantaneously assess their impact through graphical results.

Lotus Concept Valve Train (LCVT)

A cam profiling application that comprehensively encompasses all aspects of valve train design; LCVT models all aspects including contact stress, float speed, radius of curvature and valve to piston interference to enable the design and development of a camshaft profile. The simplified dynamic analysis module also allows detailed dynamic behaviour to be investigated.

Support

Technical Support

If you have any problems or questions regarding Lotus Engineering Software that the software help files cannot answer, please feel free to contact our team of developers.

For further information contact us by email. [email protected]

Getting Started

A series of ‘getting started’ documents are available. Each one takes the user through a particular software product or task, in a series of structured tutorials. Detailed screen shots and the required user inputs provide an ideal introduction to the features of the products.

The ‘Getting Started’ documents are included as part of the individual product install files, but can be direclty downloaded here through the links below;

Software Downloads

Lotus Program Guide For Pc Windows 7

Lotus Suspension Analysis – Shark and Lotus Concept Valvetrain programs are protected by a Flexlm licencing system that requires a valid license file to run. Software is for Windows Operating Systems Only.

For further information on sales and support contact us by email. [email protected]

Software Release Notes

Lotus Suspension Analysis

  • 30th Apr 2020 Lotus Suspension Analysis v6.02c
  • 24th Apr 2019 Lotus Suspension Analysis v6.02b
  • 14th Mar 2019 Lotus Suspension Analysis v6.02a
  • 14th Nov 2018 Lotus Suspension Analysis v6.01c

Lotus Concept Valve Train

  • 26th Mar 2020 Lotus Concept Valve Train v3.02a
  • 2nd Dec 2019 Lotus Concept Valve Train v3.01d
  • 10th Apr 2018 Lotus Concept Valve Train v3.01c
  • 21st Feb 2018 Lotus Concept Valve Train v3.01b

Lotus Engine Simulation – Freeware

Lotus Program Guide For Pc

A freeware multi-cylinder version of Lotus Engine Simulation is available to download and run without the need of a license file. This replaces the previous freeware version that was limited to single cylinder models only (updated Jan 2020).

As this version of the software is offered as freeware Lotus Engineering will not guarantee that they are able to respond to users support inquiries.

Academic Licenses

Academic licenses are available for use within an academic environment for the purpose of research or teaching. Whilst under academic licensing a single seat of one product is offered free of charge per academic institute, an academic license fee is payable for multiple seats and/or products. Use of the software for consultancy purposes or any off-site use requires prior approval by Lotus.

Lotus Software

Support of the software will be controlled on an hourly basis up to a maximum cumulative total. All support should be directed through a nominated member of staff at the educational establishment and will be restricted to telephone / email interaction.

Lotus Program Guide Pc Download

Lotus reserves the right to control the use of its name with respect to any project in which the software has been employed.

Lotus Laptops Usa

For further information on Academic Licenses contact us by email. [email protected]