out-of-core bug #7
Description
When the number of total blocks is greater than the number of processes and the number of blocks keeping in memory is less
than the number of local blocks, an error is thrown for sending and receiving data between blocks. I have tried to run examples/pread-Voronoi in the out-of-core mode. Here is the input parameters in PREAD_VORONOI.
procs=2
infile=./unit-cube.h5
opts="-m 1 -b 4"
However, in the out-of-core mode, the redistribute() function in src/tess-regular.cpp which sorts and redistributes points in blocks threw an exception. The print information is as follows.
Saving block gid 0, points 32768
Saving block gid 2, points 32768
---------round=0-------------------
gid 1, points 32768
gid 3, points 32768
[1] Sent 16424 points to [0]
[3] Sent 16315 points to [2]
Saving block gid 3, points 16453
Saving block gid 1, points 16344
Loading block gid 2, points 32768
Loading block gid 0, points 32768
gid 2, srp.in_link().size=0, srp.incoming()->size()=0
gid 0, srp.in_link().size=0, srp.incoming()->size()=0
It seems that communication can only occur between blocks in memory. The blocks in storage (i.e. gid 0 and gid 2) cannot dequeue data that is enqueued by the blocks in memory.
I would be very grateful if you could take a moment to fix this bug.