MAGMA Forum

by **jeremiahpalmer** » Thu May 03, 2012 12:00 pm

I ran testing_zgesv and got this output:

Code: Select all: device 0: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 1: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 2: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 3: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 4: Tesla C2075, 1147.0 MHz clock, 5375.2 MB memory, capability 2.0 device 5: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 6: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 7: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 Usage: ./testing_zgesv -N <matrix size> -R <right hand sides> -N can be repeated up to 10 times N NRHS GPU GFlop/s || b-Ax || / ||A||*||B|| ======================================================== 1024 100 54.76 6.517249e+152 2048 100 154454.94 7.701791e-01 3072 100 499112.47 7.651407e-01 4032 100 1203744.20 7.519598e-01 5184 100 2568466.55 7.598556e-01 6016 100 3958030.74 7.451370e-01 7040 100 6598876.04 7.576308e-01 8064 100 9479215.99 7.457324e-01 9088 100 8045028.83 7.503526e-01 10112 100 10919122.07 7.582880e-01

I also ran testing_zgesv_gpu and got this output:

Code: Select all: device 0: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 1: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 2: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 3: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 4: Tesla C2075, 1147.0 MHz clock, 5375.2 MB memory, capability 2.0 device 5: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 6: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 7: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 Usage: ./testing_zgesv_gpu -N <matrix size> -R <right hand sides> -N can be repeated up to 10 times N NRHS GPU GFlop/s || b-Ax || / ||A||*||B|| ======================================================== 1024 100 18.34 1.234136e-03 2048 100 3282167.55 6.160297e-04 3072 100 10606140.03 4.142864e-04 4032 100 23473011.91 3.176803e-04 5184 100 56139340.28 2.475162e-04 6016 100 76192091.79 2.133183e-04 7040 100 107781642.03 1.826547e-04 8064 100 85312943.95 1.596054e-04 9088 100 258446551.31 1.417983e-04 10112 100 315441304.14 1.275780e-04

Does anyone know if the zgesv fix is easy? Or do I need to wait for a future release of MAGMA?

Thanks,
Jeremiah

by **mgates3** » Thu May 03, 2012 12:38 pm

I could not replicate your problem, so a bit more investigation is needed to diagnose it. Clearly the magma_zgesv routine is failing and returning early, hence the erroneous Gflop/s speeds. It's confusing why no error is reported, though.
What do you get for testing_zgetrf ?
What about other precisions:
testing_sgetrf and testing_sgesv
testing_dgetrf and testing_dgesv
testing_cgetrf and testing_cgesv

-mark

by **jeremiahpalmer** » Thu May 03, 2012 2:54 pm

Thanks for investigating my issue, Mark. Here is what I get for testing_zgetrf:

Code: Select all: Usage: testing_zgetrf -M 1024 -N 1024 M N CPU GFlop/s GPU GFlop/s ||PA-LU||/(||A||*N) ============================================================ 1024 1024 56.82 157.43 2.347769e-01 2048 2048 96.70 130870.32 2.500543e-01 3072 3072 99.54 460118.97 2.499506e-01 4032 4032 103.73 929677.03 2.500080e-01 5184 5184 109.06 2122727.62 2.499899e-01 6016 6016 110.28 1872852.04 2.499754e-01 7040 7040 127.48 3219331.86 2.499592e-01 8064 8064 128.62 4539932.41 2.499908e-01 9088 9088 129.71 6540852.40 2.500076e-01 10112 10112 130.72 9606870.12 2.500188e-01

Here is output for testing_sgetrf:

Code: Select all: testing_sgetrf -M 1024 -N 1024 M N CPU GFlop/s GPU GFlop/s ||PA-LU||/(||A||*N) ============================================================ 1024 1024 32.99 15.80 2.238783e-09 2048 2048 151.85 54.93 1.919010e-09 3072 3072 168.53 98.64 1.787685e-09 4032 4032 180.08 206.09 2.056815e-09 5184 5184 193.18 225.33 1.941383e-09 6016 6016 196.77 284.97 1.888445e-09 7040 7040 224.78 314.74 1.847246e-09 8064 8064 225.39 339.91 1.927249e-09 9088 9088 233.48 360.27 2.127291e-09 10112 10112 237.15 376.96 2.308559e-09

Here is output for testing_sgesv:

Code: Select all: testing_sgetrf -M 1024 -N 1024 M N CPU GFlop/s GPU GFlop/s ||PA-LU||/(||A||*N) ============================================================ 1024 1024 32.99 15.80 2.238783e-09 2048 2048 151.85 54.93 1.919010e-09 3072 3072 168.53 98.64 1.787685e-09 4032 4032 180.08 206.09 2.056815e-09 5184 5184 193.18 225.33 1.941383e-09 6016 6016 196.77 284.97 1.888445e-09 7040 7040 224.78 314.74 1.847246e-09 8064 8064 225.39 339.91 1.927249e-09 9088 9088 233.48 360.27 2.127291e-09 10112 10112 237.15 376.96 2.308559e-09

Here is for testing_dgetrf:

Code: Select all: testing_dgetrf -M 1024 -N 1024 M N CPU GFlop/s GPU GFlop/s ||PA-LU||/(||A||*N) ============================================================ 1024 1024 3.11 13.26 4.160666e-18 2048 2048 46.38 41.90 3.583859e-18 3072 3072 84.10 111.83 4.002220e-18 4032 4032 91.73 141.23 3.816895e-18 5184 5184 100.09 166.64 3.611515e-18 6016 6016 100.93 181.44 3.489463e-18 7040 7040 115.65 196.51 3.404586e-18 8064 8064 116.62 212.97 2.715763e-18 9088 9088 120.79 222.71 2.619804e-18 10112 10112 122.61 229.63 2.550349e-18

Here is for testing_dgesv:

Code: Select all: testing_dgesv -N <matrix size> -R <right hand sides> -N can be repeated up to 10 times N NRHS GPU GFlop/s || b-Ax || / ||A||*||B|| ======================================================== 1024 100 10.70 1.651702e-15 2048 100 34.92 1.905586e-15 3072 100 75.23 3.186311e-15 4032 100 94.44 2.400437e-14 5184 100 115.25 9.311146e-15 6016 100 127.01 8.242728e-15 7040 100 141.52 1.675615e-14 8064 100 156.07 5.840908e-15 9088 100 166.20 1.789939e-15 10112 100 174.06 2.756148e-15

Here is output for testing_cgetrf:

Code: Select all: testing_cgetrf -M 1024 -N 1024 M N CPU GFlop/s GPU GFlop/s ||PA-LU||/(||A||*N) ============================================================ 1024 1024 74.37 115.36 4.994611e-09 2048 2048 189.58 261.72 5.879262e-09 3072 3072 202.16 366.46 5.797781e-09 4032 4032 205.56 429.19 5.732481e-09 5184 5184 213.11 486.30 5.662354e-09 6016 6016 217.43 517.20 6.340097e-09 7040 7040 251.04 547.30 7.246737e-09 8064 8064 252.00 568.04 7.940759e-09 9088 9088 256.50 590.04 8.660629e-09 10112 10112 259.01 606.37 9.272721e-09

Here is output for testing_cgesv:

Code: Select all: testing_cgesv -N <matrix size> -R <right hand sides> -N can be repeated up to 10 times N NRHS GPU GFlop/s || b-Ax || / ||A||*||B|| ======================================================== 1024 100 60.95 3.271699e-07 2048 100 203.56 1.370101e-06 3072 100 281.00 1.144669e-06 4032 100 342.44 2.301578e-06 5184 100 389.63 5.714119e-06 6016 100 419.74 6.532921e-07 7040 100 451.95 1.021400e-06 8064 100 480.62 3.112221e-06 9088 100 504.06 1.041605e-06 10112 100 523.01 1.944749e-06

So, obviously, the real problem is in zgetrf. (By the way, this output is from magma_1.1.0.)

Thank you for your help!
-Jeremiah

by **mgates3** » Fri May 04, 2012 5:58 pm

Can you try other sizes, such as
testing_zgetrf -M 1000 -N 1000
testing_zgetrf -M 2000 -N 2000
testing_zgetrf -M 4000 -N 4000
Do other double complex routines work, such zpotrf, zgeqrf, etc.?
-mark

by **jeremiahpalmer** » Fri May 04, 2012 6:51 pm

Here is what I get for testing_zgetrf -M 1000 -N 1000

Code: Select all: testing_zgetrf -M 1000 -N 1000 M N CPU GFlop/s GPU GFlop/s ||PA-LU||/(||A||*N) ============================================================ 1000 1000 49.97 126.31 2.345270e-01

Here is what I get for testing_zgetrf -M 2000 -N 2000

Code: Select all: testing_zgetrf -M 2000 -N 2000 M N CPU GFlop/s GPU GFlop/s ||PA-LU||/(||A||*N) ============================================================ 2000 2000 81.14 438.42 2.420384e-01

Here is what I get for testing_zgetrf -M 4000 -N 4000
testing_zgetrf -M 4000 -N 4000

Code: Select all: M N CPU GFlop/s GPU GFlop/s ||PA-LU||/(||A||*N) ============================================================ 4000 4000 93.07 1010.68 2.420734e-01

Here is what I get for testing_zpotrf:

Code: Select all: testing_zpotrf -UPLO U -N 1024:40000 N CPU GFlop/s GPU GFlop/s ||R_magma - R_lapack||_F / ||R_lapack||_F ======================================================== ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value 1024 48.58 86.75 2.760964e-03 ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value 2048 108.96 197.23 2.071686e-03 ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value 3072 115.78 293.54 1.725181e-03 ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value ** On entry to ZGEMM parameter number 13 had an illegal value 4032 121.36 604.60 3.726479e-01 Argument 6 of magma_zpotrf had an illegal value. 5184 125.88 807968.36 6.149519e+01 Argument 6 of magma_zpotrf had an illegal value. 6048 127.19 1586436.50 6.648873e+01 Argument 6 of magma_zpotrf had an illegal value. 7200 128.72 2945677.70 7.262484e+01 Argument 6 of magma_zpotrf had an illegal value. 8064 128.78 4019409.11 7.690918e+01 Argument 6 of magma_zpotrf had an illegal value. 8928 129.27 5582925.11 8.096837e+01 Argument 6 of magma_zpotrf had an illegal value. 10240 129.12 8523633.07 8.677301e+01 Argument 6 of magma_zpotrf had an illegal value. 20000 136.71 61663969.36 1.216120e+02 Argument 6 of magma_zpotrf had an illegal value.

(I killed it before it completed.)

Any ideas?

Thanks,
Jeremiah

by **mgates3** » Sat May 05, 2012 1:32 pm

Nothing is apparent yet. Since dgetrf works, it doesn't seem to be a precision issue. Since smaller sizes work, it doesn't seem to be a memory issue. It looks like everything double complex is failing for you. Try testing_*gemm with various sizes.

What is your hardware (CPU, memory, GPU), OS, compiler, Magma version, CUDA version, BLAS and LAPACK versions? What is your make.inc? What is your $LD_LIBRARY_PATH? Any other environment variables that might be relevant (MKL, etc.)? Anything other information about how you compiled it, problems you ran into, etc.?

If you can, try different versions of CUDA, BLAS, etc., to see if some different combination works. If you have a different computer, try on different hardware.

I noticed you have multiple GPU cards installed. Try using a different card. In the testing program, right after TESTING_CUDA_INIT put:
if ( cudaSetDevice( 1 ) != cudaSuccess ) {
printf( "cudaSetDevice failed\n" );
exit(1);
}
The "1" designates card 1. It normally defaults to using card 0.

-mark

by **jeremiahpalmer** » Tue May 08, 2012 3:38 pm

Some details:

In testing_zgemm, I commented out the call to magma_zgemm and forced it to run only one matrix size (M=N=K=1024). I used cudaGetLastError before the call to cublasZgemm and get no error. I used it after cublasZgemm and I get "unspecified launch failure".

Hardware Details:

2 x Intel X5675
98GB Memory, 8 C2075

Software Details:

Magma 1.1.0
CUDA release 4.1, V0.2.1221
Code: Select all
LD_LIBRARY_PATH=/opt/intel/Compiler/11.1/064/lib/intel64:/opt/intel/Compiler/11.1/064/ipp/em64t/sharedlib:/opt/intel/Compiler/11.1/064/mkl/lib/em64t:/opt/intel/Compiler/11.1/064/tbb/intel64/cc4.1.0_libc2.4_kernel2.6.16.21/lib:/opt/intel/Compiler/11.1/064/lib/intel64:/opt/intel/Compiler/11.1/064/ipp/em64t/sharedlib:/opt/intel/Compiler/11.1/064/mkl/lib/em64t:/opt/intel/Compiler/11.1/064/tbb/intel64/cc4.1.0_libc2.4_kernel2.6.16.21/lib:/opt/hpmpi/lib/linux_amd64:/opt/intel/mkl/9.0/lib/em64t:/usr/local/cuda/lib64
Kernel Version: 2.6.32-220.4.2.el6.x86_64
OS: CentOS release 6.2 (Final)
Intel Compiler Version 11.1
BLAS and LAPack: MKL 10.0.011

Also:
I tried running this on a different GPU card on the same machine. It failed the same way on each GPU.
I tried running this on a different machine with 4 GTX 480s - same fail.

Thanks,
Jeremiah

by **jeremiahpalmer** » Thu May 17, 2012 12:26 pm

Any ideas?

I downloaded magma 1.2 and ran testing_zgemm as is, and I got this output:

Code: Select all: CUBLAS error: memory mapping error (11) in magma_zgetmatrix at zset_get.cpp:113 CUBLAS error: memory mapping error (11) in magma_zsetmatrix at zset_get.cpp:98 CUBLAS error: memory mapping error (11) in magma_zgetmatrix at zset_get.cpp:113 CUBLAS error: memory mapping error (11) in magma_zsetmatrix at zset_get.cpp:98 CUBLAS error: memory mapping error (11) in magma_zsetmatrix at zset_get.cpp:98 CUBLAS error: memory mapping error (11) in magma_zsetmatrix at zset_get.cpp:98 testing_zgemm: zgemm_fermi.cu:349: void magmablas_zgemm(char, char, int, int, int, cuDoubleComplex, const cuDoubleComplex*, int, const cuDoubleComplex*, int, cuDoubleComplex, cuDoubleComplex*, int): Assertion `cudaBindTexture(&offsetA, tex_ref_A, d_A, sizeA*sizeof(cuDoubleComplex)) == cudaSuccess' failed. device 0: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 1: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 2: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 3: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 4: Tesla C2075, 1147.0 MHz clock, 5375.2 MB memory, capability 2.0 device 5: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 6: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 device 7: Tesla C2075, 1147.0 MHz clock, 5375.4 MB memory, capability 2.0 Usage: testing_zgemm [-NN|NT|TN|TT] [-N 1024] Testing transA = N transB = N M N K MAGMA GFLop/s CUBLAS GFlop/s error ================================================================== 1024 1024 1024 648.39 91382.28 1.412704e+00

Thanks for the help!
-Jeremiah

by **mgates3** » Mon May 21, 2012 11:30 am

Memory mapping errors usually happen when you pass a device pointer where it expects a CPU pointer, or vice-versa, or any other time the pointer is invalid. They are the generic seg-fault for GPU code.

What is your make.inc file?
I noticed in an earlier post that you used Intel icc. Perhaps try with gcc.

-mark

by **jeremiahpalmer** » Mon May 21, 2012 1:03 pm

Your suggestion worked! I replace icc with gcc and recompiled. testing_zgesv, testing_zgemm, etc. all behave themselves.

Thanks!
-Jeremiah

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