Dear Sylvestre, I've zeroed down the bug to the last blas upload. Note that for the intel program, the expected Left singular vectors are:
Left singular vectors (stored columnwise) ( -0.86, 0.00) ( 0.40, 0.00) ( 0.32, 0.00) ( -0.35, 0.13) ( -0.24, -0.21) ( -0.63, 0.60) ( 0.15, 0.32) ( 0.61, 0.61) ( -0.36, 0.10) Here is with the older Blas: [$ /tmp] sudo dpkg -i libblas3gf_1.2-2_amd64.deb (Reading database ... 22762 files and directories currently installed.) Preparing to replace libblas3gf 1.2-2 (using libblas3gf_1.2-2_amd64.deb) ... Unpacking replacement libblas3gf ... Setting up libblas3gf (1.2-2) ... [$ /tmp] ./a.out ZGESVD Example Program Results Singular values 17.63 11.61 6.78 Left singular vectors (stored columnwise) ( -0.86, -0.00) ( 0.40, -0.00) ( 0.32, 0.00) ( -0.35, 0.13) ( -0.24, -0.21) ( -0.63, 0.60) ( 0.15, 0.32) ( 0.61, 0.61) ( -0.36, 0.10) Right singular vectors (stored rowwise) ( -0.22, 0.51) ( -0.37, -0.32) ( -0.53, 0.11) ( 0.15, 0.38) ( 0.31, 0.31) ( 0.09, -0.57) ( 0.18, -0.39) ( 0.38, -0.39) ( 0.53, 0.24) ( 0.49, 0.28) ( -0.47, -0.25) ( -0.15, 0.19) With the newer Blas: [# /tmp] sudo dpkg -i libblas3gf_1.2-3_amd64.deb (Reading database ... 22762 files and directories currently installed.) Preparing to replace libblas3gf 1.2-2 (using libblas3gf_1.2-3_amd64.deb) ... Unpacking replacement libblas3gf ... Setting up libblas3gf (1.2-3) ... [# /tmp] ./a.out ZGESVD Example Program Results Singular values 17.63 11.61 6.78 Left singular vectors (stored columnwise) ( -0.86, -0.00) ( 0.40, -0.00) ( 0.32, 0.00) ( -0.35, -0.21) ( -0.24, -0.21) ( -0.63, 0.60) ( 0.15, 0.61) ( 0.61, 0.61) ( -0.36, 0.10) Right singular vectors (stored rowwise) ( -0.22, 0.51) ( -0.37, -0.32) ( -0.53, 0.11) ( 0.15, 0.38) ( 0.31, 0.31) ( 0.09, -0.57) ( 0.18, -0.39) ( 0.38, -0.39) ( 0.53, 0.24) ( 0.49, 0.28) ( -0.47, -0.25) ( -0.15, 0.19) Note that the second line of the Left Singular vectors doesn't match. I couldn't progress further on my probe, but hope this helps when you come back to this bug. Thanks! Kumar -- We do not stray out of all words into the ever silent; We do not raise our hands to the void for things beyond hope. - Rabindranath Tagore (The Gardener, 1915)
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