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Searched refs:B_k (Results 1 – 3 of 3) sorted by relevance

/petsc/src/ksp/ksp/utils/lmvm/tests/
H A Dex1.c300 static PetscErrorCode MatComputeInverseOperator(Mat B, Mat *B_k, PetscBool use_J0) in MatComputeInverseOperator() argument
310 PetscCall(MatComputeOperator(Binv, MATDENSE, B_k)); in MatComputeInverseOperator()
396 Mat B_k; in TestUpdate() local
402 PetscCall(MatComputeOperator(B, MATDENSE, &B_k)); in TestUpdate()
407 PetscCall(MatAXPY(B_k_exp, -1.0, B_k, SAME_NONZERO_PATTERN)); in TestUpdate()
409 …PetscCall(PetscInfo((PetscObject)B_k, "Forward update error %g, relative error %g\n", (double)err,… in TestUpdate()
410 …PetscCheck(err <= PETSC_SMALL * norm, PetscObjectComm((PetscObject)B_k), PETSC_ERR_PLIB, "Forward … in TestUpdate()
413 PetscCall(MatDestroy(&B_k)); in TestUpdate()
/petsc/src/ksp/pc/impls/bddc/
H A Dbddcschurs.c1158 PetscBLASInt B_k, B_n; in PCBDDCSubSchursSetUp() local
1185 B_k = 1; in PCBDDCSubSchursSetUp()
1192 …if (B_n) PetscCallBLAS("BLASsyrk", BLASsyrk_("L", "N", &B_n, &B_k, &sum, cs_AIB + i * size_schur, … in PCBDDCSubSchursSetUp()
1193 …if (matl_dbg_viewer && B_n) PetscCallBLAS("BLASsyrk", BLASsyrk_("L", "N", &B_n, &B_k, &sum, cs_AIB… in PCBDDCSubSchursSetUp()
1196 …if (B_n) PetscCallBLAS("BLASsyr2k", BLASsyr2k_("L", "N", &B_n, &B_k, &sum, cs_AIB + k * size_schur… in PCBDDCSubSchursSetUp()
1197 …_dbg_viewer && B_n) PetscCallBLAS("BLASsyr2k", BLASsyr2k_("L", "N", &B_n, &B_k, &sum, cs_AIB + k *… in PCBDDCSubSchursSetUp()
1201 …if (B_n) PetscCallBLAS("BLASsyr2k", BLASsyr2k_("L", "N", &B_n, &B_k, &sum, array + n_I, &B_n, cs_A… in PCBDDCSubSchursSetUp()
1202 …if (matl_dbg_viewer && B_n) PetscCallBLAS("BLASsyr2k", BLASsyr2k_("L", "N", &B_n, &B_k, &sum, arra… in PCBDDCSubSchursSetUp()
/petsc/doc/manual/
H A Dtao.md2173 \text{subject to} & A_k (u-u_k) + B_k (v-v_k) + g_k = 0,
2178 $B_k = \nabla_v g(u_k,v_k)$, and $g_k = g(u_k, v_k)$ and
2233 A_k (u_{k+\frac{1}{2}} - u_k) + B_k (v_{k+\frac{1}{2}} - v_k) + \alpha_k g_k = 0.
2250 \text{subject to} & A_k (u-u_k) + B_k (v-v_k) + \alpha_k g_k = 0.
2259 \text{subject to} & A_k du + B_k dv + \alpha_k g_k = 0
2266 du = -A_k^{-1}(B_k dv + \alpha_k g_k).
2273 \displaystyle \min_{dv} & \tilde{f}_k(u_k-A_k^{-1}(B_k dv + \alpha_k g_k), v_k+dv), \\
2281 \displaystyle \min_{dv} & \tilde{f}_k(u_{k+\frac{1}{2}} - A_k^{-1} B_k dv, v_{k+\frac{1}{2}}+dv). \\
2301 \nabla_u \tilde{f}_k(u_{k+\frac{1}{2}}, v_{k+\frac{1}{2}}) A_k^{-1} B_k \\
2302 & = & d_{k+\frac{1}{2}} + c_{k+\frac{1}{2}} A_k^{-1} B_k
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