How to check the matrix set by "AMGX_matrix_upload_all"
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- Dominant language
- Cuda
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Description
I read in a matrix from the matrix market file and upload the matrix with
"AMGX_matrix_upload_all(ADiffu, NumGlobalRows, NumGlobalNonzeros, 1, 1, &Row_Count[0], &Col_vec[0], &Val_vec[0], 0);"
where Row_Count Col_vec Val_vec are the arrays for the CSR matrix . My code is run with only 1 gpu and 1 process.
but I got a totally wrong results. The matrix can be solved successfully with "AMG_READ_system" command .
Could you please give me some infos about how to check the matrix that I read in is correct.
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First steps
- Read the whole issue, then the project's contributing guide.
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Research direction
Start with the issue's AMGX_matrix_upload_all call and the Row_Count, Col_vec, and Val_vec CSR arrays, then compare that input with the matrix loaded through AMG_READ_system. The issue provides no file or test entry point; done would mean isolating why the uploaded matrix produces different results or documenting the correct way to inspect it.
Written by the indexing model from the issue text.
Assessment
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100