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openfoam/applications/test/fileHandler-ranks1
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Mark Olesen 883196981d ENH: add offset support to stringOps::split functions 
- for example,

     string buffer = ...;
     SubStrings<string> split;
     {
         auto colon = buffer.find(':');

         if (colon != std::string::npos)
         {
             split = stringOps::splitSpace(buffer, colon+1);
         }
     }

    Not really possible with a substr() since that would create a new
    temporary which then disappears.  Similarly awkward to split and
    then scan for the ':' to decide how many to discard.

ENH: add pop_front() and pop_back() methods to SubStrings

- the content is trivial enough (a pair of iterators) and the total
  number of elements is usually reasonable short so that removal of
  elements is inexpensive

  For example,

     string buffer = ...;
     auto split = stringOps::splitSpace(buffer);

     if (!split.empty() && split[0].str() == "face")
     {
         split.pop_front();
     }
2024-05-02 17:53:53 +02:00
..
Make ENH: more flexible handling of FOAM_IORANKS 2023-05-22 17:59:30 +02:00
README ENH: more flexible handling of FOAM_IORANKS 2023-05-22 17:59:30 +02:00
Test-fileHandler-ranks1.C ENH: add offset support to stringOps::split functions 2024-05-02 17:53:53 +02:00

README 

Test that -ioRanks selections perform as expected and that sub-rank
selection is also doing the correct thing.

For example,

mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks host
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks '(0 3 14)'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks 14,15,2,0,10,15,0,0,0,
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks '0,3,10'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks '0,3,11'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks '0,3,14'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks '0,3,15'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks '0,3,12,115'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks '0,3,10,12,115'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks host -pick '1,2,3,4'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -pick '2,4,6,8'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks '0,3' -pick '2,4,6,8'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks '0,4' -pick '2,4,6,8'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks '0,6' -pick '2,4,6,8'
mpirun -np 10 --oversubscribe Test-fileHandler-ranks1 -parallel -ioRanks '0,6' -pick '2,4,6,8'