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# EPSCHASE

EPSCHASE = “chase” - A wrapper to CHASE [Winkelmann et al., 2019].

## Notes

The Chebyshev Accelerated Subspace Iteration Eigensolver (ChASE) is expected to be particularly efficient when computing many eigenvalues at the lower end of the spectrum, in sequences of eigenproblems.

The current implementation of the interface in SLEPc is restricted to the case where the matrix has a block cyclic distribution, so SLEPc will redistribute the matrix to ScaLAPACK format.

## References

[Win19]

J. Winkelmann, P. Springer, and E. Di Napoli. ChASE: Chebyshev accelerated subspace iteration eigensolver for sequences of hermitian eigenvalue problems. ACM Trans. Math. Software, 2019. doi:10.1145/3313828.

## See Also

EPS: Eigenvalue Problem Solver, `EPS`, `EPSType`, `EPSSetType()`

## Level

beginner

## Location

src/eps/impls/external/chase/chase.c

Index of all EPS routines Table of Contents for all manual pages Index of all manual pages