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HPCG- Assertion nxf%2==0 failed.

psing51
New Contributor I
279 Views

Dear All,
I have compiled HPCG benchmark with intel 2016 parallel studio XE for (2x)Xeon(R) CPU E5-2680 (RHEL 6.6).
I have 64 GB of memory installed on my machine. Also, my hpcg.dat file is :

HPCG Linpack benchmark input file
Sandia National Laboratories, University of Tennessee
430 430 430
1200

With this configuration , the xhpcg binary occupies 83% of memory but after ~ 13 minutes the run crashes with error:
xhpcg: src/GenerateCoarseProblem.cpp:50: void GenerateCoarseProblem(const SparseMatrix_STRUCT &): Assertion `nxf%2==0' failed.

Could you please let me know where i am going wrong with the configurations?

 

 

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2 Replies
Ying_H_Intel
Employee
279 Views

Hello, 

IPS XE(include MKL) have upgrade to 2017 update 1.  If possible, could you please try the latest version? 

and here is ready exectuable file from https://software.intel.com/en-us/articles/intel-mkl-benchmarks-suite, could you please run them first and see if it work on your environment

Best Regards,

Ying 

 

Alexander_K_Intel1
279 Views
Dear Puneet, Problem size should be multiplier of 8. This is due to geometric multigrid preconditioner used in benchmars is coarsing the grid by 2 for 3 times. Please let me know if it works for you. Best regards, Alexander
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