Issues installing on Linux with nvidia

[tiagoantao]

When I installed node-opencl and run the examples, I got an immediate segmentation fault.
My configuration is as follows:

• Ubuntu 16.04
• Nvidia Tesla K40
• NVidia OpenCL bindings that are v 1.2 (not 2)

It so happens that the opencl headers that are made available with ubuntu (package opencl-headers) are 2.0

This means that, for example, commandqueue.cpp #ifndef CL_VERSION_2_0 will add the wrong function on compilation.

My hack was to edit the headers and undefine CL_VERSION_2_0

I do not have the experience to make a recommendation here, maybe this is just a problem with the way things are set up on ubuntu, but I think one of these might work

• document this so that people are aware OR
• detect the openCL version of the device in a different, more dynamic way

[robertleeplummerjr]

Did you get any further here?

[mikeseven]

Sorry, I was caught up in too many urgent things. I may be able to spend some time next week with holidays. Your solution is indeed a good one I used in the past in other projects. Being more dynamic is better if you only use binaries but I don't use that as I prefer the native part to be compiled for your system. This ensures you are installing with a proper runtime, which is sometimes tricky to setup on some distributions.

…

--mike

________________________________ From: Robert Plummer <notifications@github.com> Sent: Friday, November 17, 2017 7:34:04 AM To: mikeseven/node-opencl Cc: Subscribed Subject: Re: [mikeseven/node-opencl] Issues installing on Linux with nvidia (#55) Did you get any further here? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub<#55 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AAxYLIOdBOhr7KplfyAZcKb8d6otfhiGks5s3adrgaJpZM4MfgtN>.

[robertleeplummerjr]

It looks like this library will be used by http://gpu.rocks, fyi. You think there will be sufficient support?

[mikeseven]

Cool, I was not aware of this library. I'll look at it. At first glance, it seems to be a wrapper that would fit on top of node-opencl ;-)

…

--mike

________________________________ From: Robert Plummer <notifications@github.com> Sent: Friday, November 17, 2017 9:48:53 AM To: mikeseven/node-opencl Cc: Bourges-sevenier, Mikael; Comment Subject: Re: [mikeseven/node-opencl] Issues installing on Linux with nvidia (#55) It looks like this library will be used by http://gpu.rocks, fyi. You think there will be sufficient support? — You are receiving this because you commented. Reply to this email directly, view it on GitHub<#55 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AAxYLEngwLJn36i_LINkAgGAspz8x9GLks5s3ccFgaJpZM4MfgtN>.

[robertleeplummerjr]

exactly. the architectural layer would give us a means of finally having a full on GPU + js api. Design in simple js, execute... everywhere.

[robertleeplummerjr]

This is my exact issue on Ubuntu:

>  require('node-opencl/examples/saxpy');
SAXPY with vector size: 524288 elements
using device: GeForce GTX 1080 Ti
node: relocation error: /home/usergpu/node_modules/node-opencl/build/Release/opencl.node: symbol clCreateCommandQueueWithProperties, version OPENCL_2.0 not defined in file libOpenCL.so.1 with link time reference

[robertleeplummerjr]

I can provide ssh if you like.

[mikeseven]

Yes there are a few changes in CL 2.0. I'll write the shim so it's available in js and native. More importantly I have to update the code to latest nodejs native API as some callbacks don't work as expected in recent versions. Same issue as with node-webgl.

…

--mike

________________________________ From: Robert Plummer <notifications@github.com> Sent: Friday, November 17, 2017 10:21:35 AM To: mikeseven/node-opencl Cc: Bourges-sevenier, Mikael; Comment Subject: Re: [mikeseven/node-opencl] Issues installing on Linux with nvidia (#55) I can provide ssh locally, if you like. — You are receiving this because you commented. Reply to this email directly, view it on GitHub<#55 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AAxYLLtZ03N9UZ-utQIFYGqcCSowiD2Gks5s3c6vgaJpZM4MfgtN>.

[robertleeplummerjr]

Do you know what turnaround time will be? No rush.

[robertleeplummerjr]

Also: this is so exciting!

[mikeseven]

Hopefully over Thanksgiving ;-)

…

--mike

________________________________ From: Robert Plummer <notifications@github.com> Sent: Friday, November 17, 2017 12:14:31 PM To: mikeseven/node-opencl Cc: Bourges-sevenier, Mikael; Comment Subject: Re: [mikeseven/node-opencl] Issues installing on Linux with nvidia (#55) Also: this is so exciting! — You are receiving this because you commented. Reply to this email directly, view it on GitHub<#55 (comment)>, or mute the thread<https://github.com/notifications/unsubscribe-auth/AAxYLMgnec5M8Vly4Bi7-CucrBjrHs74ks5s3ekngaJpZM4MfgtN>.

[TheLarkInn]

Bumping for status. I'm very very very interested in this endeavor especially for NodeJS core, and our library webpack for parallel processing.

[robertleeplummerjr]

@mikeseven did you get around to it yet?

[mikeseven]

I haven't tested extensively but it has been in feature branch for a while.

[robertleeplummerjr]

Nice: https://github.com/mikeseven/node-opencl/tree/feature/upgrade_to_NAN_2.8.0
So we just need to test, give feedback here, and based off that, improve and release or just release?