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This should be fixed now. We made significant improvements in the HPX core:
Distributed AGAS
speedup of the parcelports
Those should have fixed the problems mentioned. Please reopen with a description of how to reproduce the performance problem if the problem still exists.
Some recent change (I assume the change to the defaults in AGAS cache size) has broken the performance for GTC. Here's what I see:
Cores Before After -- no arguments (29 Oct 2009) After -- -Ihpx.agas.local_cache_size=4096 (29 Oct 2009)
1 540 514
2 286 278
4 161 159
8 98 98
16 54 56 55
32 24 64 33
64 21 109 105
128 42
I can no longer reproduce the numbers reported earlier.
I reported this problem several days ago to Hartmut but now figure I need to create a ticket.
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