Nils Wagner wrote:
Keith Goodman wrote:
On 8/15/06, David Grant <davidgrant@gmail.com> wrote:
My idea is (if I have time) to write an eigs-like function in python that will only perform a subset of what Matlab's eigs does for. It will, for example, compute a certain number of eigenvalues and eigenvectors for a real, sparse, symmetric matrix (the case I'm interested in)
AFAIK, pysparse (in the sandbox) includes a module that implements a Jacobi-Davidson eigenvalue solver for the symmetric, generalised matrix eigenvalue problem (JDSYM). Did someone test pysparse ?
Nils
Will it also work for a real, dense, symmetric matrix? That's the case I'm interested in. But even if it doesn't, your work is great news for numpy.
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Ok it's not ready... gcc: Lib/sandbox/pysparse/src/spmatrixmodule.c In file included from Lib/sandbox/pysparse/src/spmatrixmodule.c:17: Lib/sandbox/pysparse/src/ll_mat.c: In function ‘LLMat_matvec_transp’: Lib/sandbox/pysparse/src/ll_mat.c:760: error: ‘CONTIGUOUS’ undeclared (first use in this function) Lib/sandbox/pysparse/src/ll_mat.c:760: error: (Each undeclared identifier is reported only once Lib/sandbox/pysparse/src/ll_mat.c:760: error: for each function it appears in.) Lib/sandbox/pysparse/src/ll_mat.c: In function ‘LLMat_matvec’: Lib/sandbox/pysparse/src/ll_mat.c:797: error: ‘CONTIGUOUS’ undeclared (first use in this function) In file included from Lib/sandbox/pysparse/src/spmatrixmodule.c:18: Lib/sandbox/pysparse/src/csr_mat.c: In function ‘CSRMat_matvec_transp’: Lib/sandbox/pysparse/src/csr_mat.c:119: error: ‘CONTIGUOUS’ undeclared (first use in this function) Lib/sandbox/pysparse/src/csr_mat.c: In function ‘CSRMat_matvec’: Lib/sandbox/pysparse/src/csr_mat.c:146: error: ‘CONTIGUOUS’ undeclared (first use in this function) In file included from Lib/sandbox/pysparse/src/spmatrixmodule.c:19: Lib/sandbox/pysparse/src/sss_mat.c: In function ‘SSSMat_matvec’: Lib/sandbox/pysparse/src/sss_mat.c:83: error: ‘CONTIGUOUS’ undeclared (first use in this function) In file included from Lib/sandbox/pysparse/src/spmatrixmodule.c:17: Lib/sandbox/pysparse/src/ll_mat.c: In function ‘LLMat_matvec_transp’: Lib/sandbox/pysparse/src/ll_mat.c:760: error: ‘CONTIGUOUS’ undeclared (first use in this function) Lib/sandbox/pysparse/src/ll_mat.c:760: error: (Each undeclared identifier is reported only once Lib/sandbox/pysparse/src/ll_mat.c:760: error: for each function it appears in.) Lib/sandbox/pysparse/src/ll_mat.c: In function ‘LLMat_matvec’: Lib/sandbox/pysparse/src/ll_mat.c:797: error: ‘CONTIGUOUS’ undeclared (first use in this function) In file included from Lib/sandbox/pysparse/src/spmatrixmodule.c:18: Lib/sandbox/pysparse/src/csr_mat.c: In function ‘CSRMat_matvec_transp’: Lib/sandbox/pysparse/src/csr_mat.c:119: error: ‘CONTIGUOUS’ undeclared (first use in this function) Lib/sandbox/pysparse/src/csr_mat.c: In function ‘CSRMat_matvec’: Lib/sandbox/pysparse/src/csr_mat.c:146: error: ‘CONTIGUOUS’ undeclared (first use in this function) In file included from Lib/sandbox/pysparse/src/spmatrixmodule.c:19: Lib/sandbox/pysparse/src/sss_mat.c: In function ‘SSSMat_matvec’: Lib/sandbox/pysparse/src/sss_mat.c:83: error: ‘CONTIGUOUS’ undeclared (first use in this function) error: Command "gcc -pthread -fno-strict-aliasing -DNDEBUG -O2 -fmessage-length=0 -Wall -D_FORTIFY_SOURCE=2 -g -fPIC -ILib/sandbox/pysparse/include/ -I/usr/lib64/python2.4/site-packages/numpy/core/include -I/usr/include/python2.4 -c Lib/sandbox/pysparse/src/spmatrixmodule.c -o build/temp.linux-x86_64-2.4/Lib/sandbox/pysparse/src/spmatrixmodule.o" failed with exit status 1 Nils