Cloud compiler for compiling Parallax Propeller Spin and C projects.


### Prerequisite


This application is written for Python 2.7, on a unix based system (bsd, linux, Mac) although it may may work on Windows but it is not supported. Official testing is done on a headless Debian 8.1.

Required python libraries, available for installation using easy_install or pip:

Propeller C compiler

You will need to have the Propeller C compiler installed.

If you haven’t installed it already, and you install Cloud-Compiler on a headless server, you will still have to install SimpleIDE as there currently is no installer available with just the compiler. Follow the Linux directions described on the Simple IDE with Propeller GCC Installation Instructions but only up to step 3. There is no need to install the dependencies (libqtgui4, libqtcore4 and libftdi1) or add the user to the dialout group as the server will not have to connect to a the Propeller using serial communication.

Propeller Simple libraries

Download and extract the latest Simple libraries

OpenSpin compiler

If you have installed the Propeller C compiler, it will contain the OpenSpin compiler.

Spin libraries

If you have installed the Propeller C compiler, it will contain the Spin libraries, otherwise install the Propeller Tool on another system and copy the directory containing the spin files from the installed files.


Make sure all prerequisites are fulfilled, then clone the project.

No building is required, using python you can start the server. But first configure the application


Create a text file called in the users home directory and with the following configurations:

  • C compiler executable: c-compiler. Defaults to: /opt/parallax/bin/propeller-elf-gcc
  • C library location (simple libraries): c-libraries. Defaults to: /opt/simple-libraries
  • Spin compiler executable: spin-compiler. Defaults to /opt/parallax/bin/openspin
  • Spin library location: spin-libraries. Defaults to /opt/parallax/spin

For example:

c-libraries = /home/compiler/simple-libraries


Initial test using very simple spin and c programs have been conducted.

Because these have been done using a virtualized system its not 100% clear what the server specs are but some estimations:

  • Debian 8.2 without graphical layer using VirtualBox 5.0.3
  • Host pc i7-2600 @ 3.40GHz with 1 processor assigned to the VirtualBox instance
  • 16GB memory with 2GB assigned to the VirtualBox instance
  • Virtual harddisk is 8GB

The load test is configured so that each user makes a request each 5 to 15 seconds.

200 users

  • Load average: 0.3 - 0.45
  • uwsgi cpu: 24 - 28%

Locust 200 users

400 users

  • Load average: 0.87 - 0.95
  • uwsgi cpu: 50 - 62%

Locust 400 users

500 users

  • Load average: 1.10 - 1.23
  • uwsgi cpu: 63 - 66%

Once a certain load is reached, response times go up fast.

Locust 500 users