Broadcast json index file rather than loading on all ranks #752
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sriniiyer
requested review from
ngoyal2707,
punitkoura,
davides,
igormolybogFB,
Xirider,
andrewPoulton,
bashnick,
tangbinh,
urielsinger,
zycalice,
ArmenAg,
lilisierrayu and
adampolyak
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Patch Description
Broadcast jsonl index instead of loading on all ranks, to prevent slowdown by multiple ranks reading the same file
Testing steps
Tested on 64 nodes, loaded in 2 mins.