root / synthbench / euroben-ports / base / Fortran-MPI / mod2a / .svn / text-base / mkbnds.f.svn-base @ 0:839f52ef7657
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Subroutine mkbnds( a, lda, ychk ) |
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! ---------------------------------------------------------------------- |
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! --- mkbnds calculates the result vector of y = Ax by independent |
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! means: |
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! nodes sizes(k) |
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! --- --- |
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! \ \ |
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! y(j) = > k * > a(j,i+offset(k)) |
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! / / |
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! --- --- |
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! k = 1 i = 1 |
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! |
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! k = 1,..., nodes |
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! i = 1,..., sizes(*), where sizes(*) is the number of rows in |
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! node '*'. |
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! j = 1,..., sizes(me) |
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! |
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! ---------------------------------------------------------------------- |
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Use dist_module |
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Use numerics |
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Real(l_) :: a(lda,*), ychk(lda) |
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|
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Real(l_) :: sum |
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Integer :: i, j, k, kbase |
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! ---------------------------------------------------------------------- |
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Do j = 1, sizes(me) |
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ychk(j) = 0.0_l_ |
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Do k = 1, nodes |
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sum = 0.0_l_ |
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kbase = offset(k-1) |
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Do i = 1, sizes(k-1) |
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sum = sum + a(j,kbase+i) |
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End Do |
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ychk(j) = ychk(j) + k*sum |
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End Do |
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End Do |
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! ---------------------------------------------------------------------- |
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End Subroutine mkbnds |