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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Hello all,<br>
<br>
I emailed the visit users group with this issue but I have not received any info back yet. As this is a problem many of you may have encountered with FLASH data I thought the FLASH users group might have some advice as well.
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I am having a problem with Visit consuming a lot of memory when opening FLASH hdf5 files. I have simulations with about 50E6 nodes on the fluid mesh and about 20k particles. The hdf5 files are written with parallel hdf5 (I ran the setup with +hdf5TypeIO). The
chk files are 5-16gb or so in size, getting larger in time as there are more nodes at later times.
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When I open the files with Visit each processor seems to consume enough memory to open the whole chk file no matter how many processor I throw at it. This means I end up memory limited and have to rune with very few processor on each computer node.
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I expected visit would be able to break up the hdf5 files so that each processor would not need the whole file in memory. This is the behavior I have seen when using other codes with data in the silo format.
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Is this the normal behavior for visit with large FLASH data files? <br>
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If not, any suggestions on what I am doing wrong?<br>
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If so, any suggestions on how to mitigate this memory problem?<br>
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Thanks,<br>
Jacob<br>
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