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output.log
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USING DEFAULT MPIIO PARAMETERS
==============================
TESTING COLLECTING MPIIO
------------------------
Parameters:
----------
- Dataset size: 40000000 x 50
- Number of processors: 20
- Block size: 2000000
- Output file size: 14.901 GB
- Size of smallest contiguous memory written to file in...
- Test 1: 15.259 MB
- Test 2: 762.939 MB
- Using collective MPIIO driver
Creating file output.h5
Test 1: parallelizing over fast dimension
Done. Time elapsed: 29.976 s
Bandwidth: .497 GB/s
Test 2: parallelizing over slow dimension
Done. Time elapsed: 30.006 s
Bandwidth: .497 GB/s
TESTING INDEPENDENT MPIIO
-------------------------
Parameters:
----------
- Dataset size: 40000000 x 50
- Number of processors: 20
- Block size: 2000000
- Output file size: 14.901 GB
- Size of smallest contiguous memory written to file in...
- Test 1: 15.259 MB
- Test 2: 762.939 MB
- Using independent MPIIO driver
Creating file output.h5
Test 1: parallelizing over fast dimension
Done. Time elapsed: 54.335 s
Bandwidth: .274 GB/s
Test 2: parallelizing over slow dimension
Done. Time elapsed: 5.875 s
Bandwidth: 2.536 GB/s
USING MPICH_MPIIO_HINTS='*:romio_cb_write=disable:romio_ds_write=disable'
=========================
TESTING COLLECTING MPIIO
------------------------
Parameters:
----------
- Dataset size: 40000000 x 50
- Number of processors: 20
- Block size: 2000000
- Output file size: 14.901 GB
- Size of smallest contiguous memory written to file in...
- Test 1: 15.259 MB
- Test 2: 762.939 MB
- Using collective MPIIO driver
Creating file output.h5
Test 1: parallelizing over fast dimension
Done. Time elapsed: 53.392 s
Bandwidth: .279 GB/s
Test 2: parallelizing over slow dimension
Done. Time elapsed: 9.386 s
Bandwidth: 1.588 GB/s
TESTING INDEPENDENT MPIIO
-------------------------
Parameters:
----------
- Dataset size: 40000000 x 50
- Number of processors: 20
- Block size: 2000000
- Output file size: 14.901 GB
- Size of smallest contiguous memory written to file in...
- Test 1: 15.259 MB
- Test 2: 762.939 MB
- Using independent MPIIO driver
Creating file output.h5
Test 1: parallelizing over fast dimension
Done. Time elapsed: 57.519 s
Bandwidth: .259 GB/s
Test 2: parallelizing over slow dimension
Done. Time elapsed: 3.795 s
Bandwidth: 3.927 GB/s
USING MPICH_MPIIO_HINTS='*:romio_cb_write=enable:romio_ds_write=disable'
=========================
TESTING COLLECTING MPIIO
------------------------
Parameters:
----------
- Dataset size: 40000000 x 50
- Number of processors: 20
- Block size: 2000000
- Output file size: 14.901 GB
- Size of smallest contiguous memory written to file in...
- Test 1: 15.259 MB
- Test 2: 762.939 MB
- Using collective MPIIO driver
Creating file output.h5
Test 1: parallelizing over fast dimension
Done. Time elapsed: 23.645 s
Bandwidth: .630 GB/s
Test 2: parallelizing over slow dimension
Done. Time elapsed: 21.186 s
Bandwidth: .703 GB/s
TESTING INDEPENDENT MPIIO
-------------------------
Parameters:
----------
- Dataset size: 40000000 x 50
- Number of processors: 20
- Block size: 2000000
- Output file size: 14.901 GB
- Size of smallest contiguous memory written to file in...
- Test 1: 15.259 MB
- Test 2: 762.939 MB
- Using independent MPIIO driver
Creating file output.h5
Test 1: parallelizing over fast dimension
Done. Time elapsed: 58.966 s
Bandwidth: .253 GB/s
Test 2: parallelizing over slow dimension
Done. Time elapsed: 4.522 s
Bandwidth: 3.295 GB/s