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pybammsolvers

library0.8.2pypypi✓ verified 86d ago

Python interface for the IDAKLU solver for block algebraic multigrid methods. Current version 0.8.1, requires Python >=3.10,<3.15. Development is active with occasional releases.

data ai-ml

pip install pybammsolvers

package ↗

INSTALL

IMPORT

SIG · PYBAMMSOLVERS

pybammsolvers

datapythonv0.8.2

Install

7.0s avg

Import

16ms

Disk

351MB

Pass rate

5/ 10

Env Coverage5 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v0.8.2 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.95 runs

build_error

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 7.0s · import 0.016s · 348MB

351MB installed

● package 351MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

idaklu

✓ from pybammsolvers import idaklu

✗ import idaklu

The solver is inside the pybammsolvers namespace.

Solves a sparse linear system A x = b using the IDAKLU solver.

import numpy as np from scipy.sparse import csr_matrix from pybammsolvers import idaklu # Create a simple sparse matrix (CSR format) n = 100 A = csr_matrix(np.random.rand(n, n) + 10 * np.eye(n)) b = np.random.rand(n) # Solve using IDAKLU x = idaklu(A, b) print(x[:5])

Debug

Known issues

gotchaThe idaklu function expects the matrix A in CSR or CSC format. Dense arrays will fail or produce incorrect results.

fix

Convert to scipy.sparse.csr_matrix before passing to idaklu.

affects: *

gotchaThe solver may not converge for indefinite matrices; it is designed for SPD-like systems.

fix

Ensure the matrix is symmetric positive definite or at least positive real.

affects: *

deprecatedThe function signature changed between 0.7.x and 0.8.x: previously the order of arguments was (A, b, ...) but now also supports additional options as keyword arguments.

fix

Review call signature: idaklu(A, b, reorder=1) works for basic usage.

affects: >=0.8.0

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'idaklu'

Importing the solver directly without the package prefix.

fix

Use 'from pybammsolvers import idaklu' instead of 'import idaklu'.

TypeError: idaklu() missing 2 required positional arguments: 'A' and 'b'

Calling idaklu with only one argument or with keyword arguments incorrectly.

fix

Call idaklu(A, b) with the matrix first, right-hand side second.

Upgrade

Version history

0.8.2latest on PyPI · released May 28, 2026

Audit

Dependencies

numpyrequiredArray manipulation and solver inputs

scipyrequiredSparse matrix support (CSR, CSC)

Agent activity

10 hits · last 30 days

node

OpenAI (training)

Resources

packagehttps://pypi.org/project/pybammsolvers/ ↗