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Hello,
When I try to solve the problem with multiple right-terminal terms using BlockGmres method, after adding and setting blockSize>1 in BlockGmresKokkosExFile.cpp, why the result is not correct: ERROR: Belos did not converge! But setting blockSize=1 converges, does this mean that the algorithm has special requirements for solving matrices or certain parameters? The matrix I tested with is bcsstk12.mtx, num-rhs=4, blockSize=4.
Thanks!
The text was updated successfully, but these errors were encountered:
@CSjkcyz The maximum subspace for this example is 25, which works for blockSize=1. However, if you want to increase the block size to 4, the size of the subspace will need to increase. For example, increasing it to 120 seems to work for the solver to converge.
BlockGmres did not converge!
Hello,
When I try to solve the problem with multiple right-terminal terms using BlockGmres method, after adding and setting blockSize>1 in BlockGmresKokkosExFile.cpp, why the result is not correct: ERROR: Belos did not converge! But setting blockSize=1 converges, does this mean that the algorithm has special requirements for solving matrices or certain parameters? The matrix I tested with is bcsstk12.mtx, num-rhs=4, blockSize=4.
Thanks!
The text was updated successfully, but these errors were encountered: