MATLAB Answers

interp1 gpuArray bug

5 views (last 30 days)
Kyle
Kyle on 16 May 2019
Commented: Matt J on 9 Jan 2020
There is a bug in interp1 for gpuArrays that happens with the 2 input option. It works fine with 3 inputs.
The below works fine yielding the 2x2 array below
interp1((1:80)', randn(80, 2), gpuArray(((1:2))'))
ans =
-0.2063 0.2255
0.2836 -0.7136
Now if calling the same code but with only two inputs, where the first input should be implicitly (1:80)', we get the below. I have tried this call on 2 different computers.
interp1(randn(80, 2), gpuArray(((1:2))'))
Error using gpuArray/gather
An unexpected error occurred during CUDA execution. The CUDA error was:
CUDA_ERROR_ILLEGAL_ADDRESS
Error in parallel.internal.shared.buildDisplayHelper>iFirstNNumericDisplayHelper (line 73)
maybeTruncatedValue = gather( x );
Error in parallel.internal.shared.buildDisplayHelper>iBuildDisplayHelper (line 33)
dh = iFirstNNumericDisplayHelper( ...
Error in parallel.internal.shared.buildDisplayHelper (line 24)
dh = iBuildDisplayHelper( x, transferDenseFcn, transferSparseFcn, xClassName, xName, N );
Error in dispInternal (line 13)
dh = parallel.internal.shared.buildDisplayHelper( ...
Error in gpuArray/display (line 21)
dh = dispInternal( obj, thisClassName, objName );
The gpu I'm using is:
Name: 'GeForce GTX 1060'
Index: 1
ComputeCapability: '6.1'
SupportsDouble: 1
DriverVersion: 10
ToolkitVersion: 9.1000
Does anyone have this same problem and/or advice on how to fix it?

  3 Comments

Walter Roberson
Walter Roberson on 16 May 2019
I confirm on my GTX750M
Edric Ellis
Edric Ellis on 17 May 2019
Thanks for reporting this. I can confirm that I can reproduce the problem here, I'll pass this on to the relevant development group.
Kyle
Kyle on 9 Jan 2020
Is there any update on this?

Sign in to comment.

Accepted Answer

Matt J
Matt J on 9 Jan 2020
The bug appears to have been fixed in R2019b:
>> A=rand(80,2);
>> interp1((1:80)', A, gpuArray(((1:2))'))
ans =
0.6073 0.3774
0.4501 0.2160
>> interp1(A, gpuArray(((1:2))'))
ans =
0.6073 0.3774
0.4501 0.2160

  2 Comments

Kyle
Kyle on 9 Jan 2020
ok great, thank you
Matt J
Matt J on 9 Jan 2020
You're welcome, but please Accept-click the answer to indicate that you are satisfied with it.

Sign in to comment.

More Answers (0)

Products


Release

R2018b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by