spqr: spqr (sparse matrix factoring routines) spqr: spqr: SuiteSparseQR is an implementation of the multifrontal sparse QR spqr: factorization method. Parallelism is exploited both in the BLAS spqr: and across different frontal matrices using Intel's Threading spqr: Building Blocks, a shared-memory programming model for modern spqr: multicore architectures. It can obtain a substantial fraction of spqr: the theoretical peak performance of a multicore computer. spqr: spqr: spqr: