slaclab / lc2-hdf5-110

Investigate hdf5 1.10 features like SWMR and virtual dataset for LCLS II
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32 bit limit for VDS #6

Open davidslac opened 7 years ago

davidslac commented 7 years ago

It sounds like there is a 32 bit limit on the number of elements in a VDS. We think a 70 minute run, recording at a MHz, will hit the limit. To work around this, we would have to split the big VDS into multiple VDSes.

Will this work? Now the way I use a VDS is specify unlimited for the VDS count, and unlimited for the src block. So would I specify 4 billion for the VDS count and still unlimited for the block? Something to try.