Encountering Error in MetalPerformanceShaders: Assertion Failure in MPSNDArray.mm

Question

FVery OP

Created Feb ’24

Replies 2

Boosts 1

Participants 2

Hello，

I'm currently facing an issue while working with MetalPerformanceShaders in testing a Python project.

Code: https://github.com/Thinklab- SJTU/Crossformer

Error Description:

/AppleInternal/Library/BuildRoots/4e1473ee-9f66-11ee-8daf-cedaeb4cabe2/Library/Caches/com.apple.xbs/Sources/MetalPerformanceShaders/MPSCore/Types/MPSNDArray.mm:126: failed assertion `[MPSNDArrayDescriptor sliceDimension:withSubrange:] error: the range subRange.start + subRange.length does not fit in dimension[2] (15)'

I've tried updating macOS to the latest version. Also, I've attempted running the code with MPS_NO_DEVICE_CHECK=1 to bypass device checks. But errors happened again.

I'm seeking insights or solutions to this problem and If anyone has encountered a similar issue or has suggestions on how to troubleshoot and resolve this assertion failure, I would greatly appreciate your help.

Project Details:

Language: Python
Environment: PyCharm CE
Relevant Technologies: MetalPerformanceShaders, MPSNDArray

Thank you for your time and assistance!

Boost

Answer 1

FVery OP

Feb ’24

Like this, error happened:

python main_crossformer.py --data ETTh1 --in_len 720 --out_len 336 --seg_len 24 --itr 1

It's so weird，when using this below and the error would not occur.

python main_crossformer.py --data ETTh1 --in_len 168 --out_len 24 --seg_len 6 --itr 1

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Answer 2

vvve OP

Sep ’24

encounter nearly the same problem! error information: failed assertion `[MPSNDArrayDescriptor sliceDimension:withSubrange:] error: dimension index (2) not within number of dimensions (2) Dimension indices are 0-based'

cannot find any information from the Internet

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