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/petsc/src/mat/impls/aij/seq/
H A Dsymtranspose.c15 PetscInt an = A->cmap->N, am = A->rmap->N; in MatTransposeSymbolic_SeqAIJ() local
20 PetscCall(PetscCalloc1(an + 1, &ati)); in MatTransposeSymbolic_SeqAIJ()
27 for (i = 0; i < an; i++) ati[i + 1] += ati[i]; in MatTransposeSymbolic_SeqAIJ()
30 PetscCall(PetscMalloc1(an, &atfill)); in MatTransposeSymbolic_SeqAIJ()
31 PetscCall(PetscArraycpy(atfill, ati, an)); in MatTransposeSymbolic_SeqAIJ()
43 …PetscCall(MatCreateSeqAIJWithArrays(PetscObjectComm((PetscObject)A), an, am, ati, atj, NULL, &At)); in MatTransposeSymbolic_SeqAIJ()
50 at->maxnz = ati[an]; in MatTransposeSymbolic_SeqAIJ()
60 PetscInt an = A->cmap->N, am = A->rmap->N; in MatTranspose_SeqAIJ() local
80 PetscCall(PetscCalloc1(an + 1, &ati)); in MatTranspose_SeqAIJ()
86 for (i = 0; i < an; i++) ati[i + 1] += ati[i]; in MatTranspose_SeqAIJ()
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/petsc/src/snes/tutorials/
H A Dex18.c138 …PetscScalar t0, tn, ts, te, tw, an, as, ae, aw, dn, ds, de, dw, fn = 0.0, fs = 0.0, fe = 0.0, fw… in FormFunction() local
187 an = 0.5 * (t0 + tn); in FormFunction()
188 dn = PetscPowScalar(an, beta); in FormFunction()
212 an = 0.5 * (t0 + tn); in FormFunction()
213 dn = PetscPowScalar(an, beta); in FormFunction()
238 an = 0.5 * (t0 + tn); in FormFunction()
239 dn = PetscPowScalar(an, beta); in FormFunction()
258 an = 0.5 * (t0 + tn); in FormFunction()
259 dn = PetscPowScalar(an, beta); in FormFunction()
297 PetscScalar dn, ds, de, dw, an, as, ae, aw, bn, bs, be, bw, gn, gs, ge, gw; in FormJacobian() local
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H A Dex70.c386 PetscScalar an = s->hx / s->hy, anb = s->hx / (s->hy / 2); in StokesStencilLaplacian() local
392 vals[0] = -(ae + awb + asb + an); in StokesStencilLaplacian()
396 vals[2] = an; in StokesStencilLaplacian()
410 vals[1] = -(aeb + aw + asb + an); in StokesStencilLaplacian()
412 vals[2] = an; in StokesStencilLaplacian()
426 vals[1] = -(ae + awb + as + an); in StokesStencilLaplacian()
430 vals[3] = an; in StokesStencilLaplacian()
438 vals[2] = -(aeb + aw + as + an); in StokesStencilLaplacian()
440 vals[3] = an; in StokesStencilLaplacian()
446 vals[1] = -(ae + aw + asb + an); in StokesStencilLaplacian()
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/petsc/src/mat/utils/
H A Dmultequal.c14 PetscInt am, an, bm, bn, k; in MatMultEqual_Private() local
29 PetscCall(MatGetLocalSize(A, &am, &an)); in MatMultEqual_Private()
31 … an == bn, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Mat A,Mat B: local dim %" PetscInt_FMT " %" PetscI… in MatMultEqual_Private()
121 PetscInt am, an, bm, bn, cm, cn, k; in MatMatMultEqual_Private() local
138 PetscCall(MatGetLocalSize(A, &am, &an)); in MatMatMultEqual_Private()
142 PetscInt tt = an; in MatMatMultEqual_Private()
143 an = am; in MatMatMultEqual_Private()
151 …an == bm && am == cm && bn == cn, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Mat A, B, C local dim %" Pe… in MatMatMultEqual_Private()
442 PetscInt i, am, an, bm, bn, cm, cn; in MatProjMultEqual_Private() local
446 PetscCall(MatGetLocalSize(A, &am, &an)); in MatProjMultEqual_Private()
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/petsc/doc/developers/
H A Dmrmanagement.md5 At any given time, at least one of the {any}`sec_core_developers` is an
19 …- Add an appropriate label, or label ``workflow::Waiting-on-Submitter`` and ask the submitter/assi…
20 * - Without an assignee
21 - Assign the submitter (if the MR is from a fork, also list an appropriate developer)
H A Dstyle.md8 concrete realization of an abstract base class. For example,
21 letters. When they consist of several complete words, there is an
27 - have an appended `_Private` (for example, `StashValues_Private`)
29 - have an appended `_Subtype` (for example, `MatMultSeq_AIJ`).
41 function name, an underscore, and the name of the implementation, for
52 08. Options database keys are lower case, have an underscore between
57 an underscore in them unless they refer to another package that uses
58 an underscore, for example, `MATSOLVERSUPERLU_DIST`.
77 …to `PetscInt` from `PetscCount`. Since, in most configurations an array of `PetscCount` requires t…
78 of an array of `PetscInt` most index arrays (such as `ISGetIndices()` use `PetscInt`,
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/petsc/doc/changes/
H A D322.md20 - Change `MPIU_Allreduce()` to always returns an MPI error code that should be checked with `PetscC…
94 preconditioners based on an alternating direction iteration, e.g., setting $M$ for
112 - Add support for `PETSC_DETERMINE` as an argument to `KSPSetTolerances()` to set the parameter bac…
118 - Add support for `PETSC_DETERMINE` as an argument to `SNESSetTolerances()` to set the parameter ba…
137 - Add support for `PETSC_DETERMINE` as an argument to `TSSetTolerances()` to set the parameter back…
139 - Add support for `PETSC_DETERMINE` as an argument to `TSSetMaxSteps()` and `TSSetMaxTime()`
151 - Add support for `PETSC_DETERMINE` as an argument to `TaoSetTolerances()` and `TaoSetConstraintTol…
160 - Add an additional return vector to `DMCreateMassMatrixLumped()` to retrieve the local mass lumping
171 - Add an argument to `DMPlexLabelCohesiveComplete()` in order to change behavior at surface boundary
213 - Add `PETSC_NULL_ENUM` to be used instead of `PETSC_NULL_INTEGER` when a pointer to an `enum` is e…
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H A D2028.md23 - `TSSetMonitor()` now takes an additional final optional argument
30 - Changed calling sequence of SNES monitoring routines to add an
33 - Added additional final argument to `SNESSetMonitor()` an
52 - Added additional final argument to `KSPSetMonitor()` an optional
125 PetscTruth * instead of an int\*
128 - Changed these routines to return an error code. extern int
142 - PetscFree() now always returns an error code that may be checked
144 user has no access to an error condition in free(), PetscFree()
167 Also you can put anything in \{anything} as long as it is an
H A D2024.md60 - S`NESSetConvergenceHistory()` takes an additional argument;
78 - Added support for an alternative way to compute the
84 accepts an optional user-defined context variable. Likewise,
110 - Added an additional argument to `KSPSetResidualHistory()`; see
133 - Added an additional argument to `MatCopy()`;
135 - Added an additional argument to `MatDuplicate()`,
152 the manual change your current code to work, you only need add an
169 - Changed the `VecType` variable type from an enum type to a
188 - `DrawTensorContour()` has changed; its final argument is now an
200 - Changed `ViewerType` from an enum to a char \*.
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H A D2029.md23 - SNESGetJacobian() now has an additional optional final argument
25 - SNESGetFunction() now has an additional optional final argument
42 - MGSetLevels() now takes an additional optional final argument that
43 is an array of communicators to use on the SLES on each level
137 src/contrib/oberman/laplacian_q1 for an example of its use
H A D231.md48 - -ksp_view, -ksp_monitor now take an optional filename argument
81 - -snes-view, -snes_monitor now take an optional filename argument
86 - -ts_view, -ts_monitor now take an optional filename argument
95 the linear system matrix can optionally fill also an alternate
H A D2017.md66 - Added an interface to the SPAI preconditioner implementation of
75 an error if a new nonzero is generated in a sparse matrix.
86 routines linked into an application code. This can decrease the
157 pierr is an additional integer error code passed to the error
167 petsc/src/snes/examples/tutorials/ex3.c for an example.
176 - Now the option -log_summary takes [filename] as an optional
198 be used in place of the flag CONF. For an example of usage, see
/petsc/src/sys/utils/
H A Dsorti.c1038 PetscErrorCode PetscMergeIntArray(PetscInt an, const PetscInt aI[], PetscInt bn, const PetscInt bI[… in PetscMergeIntArray() argument
1044 PetscCall(PetscMalloc1(an + bn, L)); in PetscMergeIntArray()
1048 while (ak < an && bk < bn) { in PetscMergeIntArray()
1064 if (ak < an) { in PetscMergeIntArray()
1065 PetscCall(PetscArraycpy(L_ + k, aI + ak, an - ak)); in PetscMergeIntArray()
1066 k += (an - ak); in PetscMergeIntArray()
1103 PetscErrorCode PetscMergeIntArrayPair(PetscInt an, const PetscInt aI[], const PetscInt aJ[], PetscI… in PetscMergeIntArrayPair() argument
1110 n_ = an + bn; in PetscMergeIntArrayPair()
1117 while (ak < an && bk < bn) { in PetscMergeIntArrayPair()
1130 if (ak < an) { in PetscMergeIntArrayPair()
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/petsc/src/tao/leastsquares/tutorials/matlab/
H A DREADME4 24 - fails on destroy with an object in an invalid state; succeeds with nf_const = 50
/petsc/doc/manualpages/doctext/
H A Ddoctextcommon.txt21 _Given an operation `A-B` (e.g. `A` = `write`, `B` = `read`) on an object or memory
31 memory regions may execute in an arbitrary order and offer no guarantee of sequential
38 considered to be in an undefined state. A well-defined state can only be restored by
/petsc/src/snes/tests/
H A Dex20.c138 …PetscScalar t0, tn, ts, te, tw, an, as, ae, aw, dn, ds, de, dw, fn = 0.0, fs = 0.0, fe = 0.0, f… in FormFunction() local
190 an = 0.5 * (t0 + tn); in FormFunction()
191 dn = PetscPowScalar(an, beta); in FormFunction()
227 an = 0.5 * (t0 + tn); in FormFunction()
228 dn = PetscPowScalar(an, beta); in FormFunction()
275 an = 0.5 * (t0 + tn); in FormFunction()
276 dn = PetscPowScalar(an, beta); in FormFunction()
315 an = 0.5 * (t0 + tn); in FormFunction()
316 dn = PetscPowScalar(an, beta); in FormFunction()
392 an = 0.5 * (t0 + tn); in FormFunction()
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/petsc/src/ts/tests/output/
H A Dex26_arkimex_explicit_stage.out3 …]PETSC ERROR: This scheme requires an identity mass matrix, however the TSIFunctionFn you provided…
/petsc/doc/manual/
H A Ddmstag.md23 distributed in parallel over the ranks of an `MPI_Comm`. It is, however,
42 giving a rectangular local subdomain on each rank. This is extended by an element-wise stencil width
43 of *ghost* elements to create an atlas of overlapping patches.
70 strata have different numbers of points (e.g. in 1D there is an "extra" vertex on the right). This …
77 …representation of the unknown. The 4 local representations are shown, with an (elementwise) stenci…
84 The following snippet give an example of this usage.
124 Internally, each point is canonically associated with an element (top-level point (cell)). For purp…
125 regular-blocked storage, an element is grouped with lower-dimensional points left of, below ("down"…
132 with an element is
147 …) unknown in the global representation. See {numref}`figure_dmstag_numbering_local` for an example.
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H A Dgetting_started.md26 Each class consists of an abstract interface (simply a set of calling
27 sequences corresponding to an abstract base class in C++) and an implementation for each algorithm …
157 `[-display name]` - start debugger only on encountering an error
174 argument `file` optionally indicates an alternative name for the PETSc
178 for runtime customization. The final argument, `help`, is an optional
206 {cite}`using-mpi` provides an excellent introduction to the
222 Most PETSc functions return a `PetscErrorCode`, an integer
223 indicating whether an error occurred during the call. The error code
224 is set to be nonzero if an error has been detected; otherwise, it is
226 return value, while for the Fortran version, each PETSc routine has an integer error variable as
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H A Dfortran.md133 - One cannot pass a scalar variable to a function expecting an array, {any}`sec_passarray`.
135 - One must pass pointers to arrays for arguments that output an array, for example `PetscScalar, po…
151 In the Fortran version, each PETSc routine has as its final argument an
153 nonzero if an error has been detected; otherwise, it is zero. For
176 a single value one can use the Fortran [] notation to pass the scalar as an array, for example
207 Where the code expects an array, then use `PETSC_NULL_XXX_ARRAY`. For example:
225 Finally when a subroutine returns a `PetscObject` through an argument, to check if it is `NULL` you…
253 For PETSc routine arguments that return an array of `PetscInt`, `PetscScalar`, `PetscReal` or of PE…
254 one passes in a pointer to an array and the PETSc routine returns an array containing the values. F…
378 Certain PETSc functions return a context in an argument, for example, `SNESGetApplicationContext()`…
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/petsc/share/petsc/saws/
H A Ddocumentation49 …o loaded. Some are retrieved from the Argonne servers or other servers, so an internet connection …
55 …an object called "matInfo" since using a tree structure to store just a few options would be overk…
57 In Javascript, let's say we have an object 'Car' with property 'color'.
64 For arrays, deleting an element works the same. So, it is important to remember that the array leng…
/petsc/src/mat/tests/
H A Dex104.c12 PetscInt i, M = 10, N = 5, j, nrows, ncols, am, an, rstart, rend; in main() local
134 PetscCall(MatGetLocalSize(A, &am, &an)); in main()
163 PetscInt am, an, aM, aN; in main() local
165 PetscCall(MatGetLocalSize(A, &am, &an)); in main()
167 …PetscCall(MatCreateDense(PetscObjectComm((PetscObject)A), PETSC_DECIDE, an, aM + 10, aN, NULL, &B)… in main()
H A Dex122.c12 PetscInt nza, am, an; in main() local
33 PetscCall(MatGetLocalSize(A, &am, &an)); in main()
/petsc/src/sys/tests/linter/output/
H A DtestValidFunctionDocStrings.patch283 -+ alpha, an alpha
284 ++ alpha - an alpha
289 + alpha, an alpha
412 . asdasd - an arg
415 . asdasd - an arg
487 + foo - the input description for an in-out param
493 + foo - the input description for an in-out param
504 - foo - the output description for an in-out param
509 -- foo - the output description for an in-out param
510 +. foo - the output description for an in-out param
/petsc/
H A DCONTRIBUTING13 act of submitting a pull request or patch (with or without an explicit
14 Signed-off-by tag) will be understood as an affirmation of the
26 of my knowledge, is covered under an appropriate open-source

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