batchlas::ops::syev Namespace Reference

Functions

candidates()

template<class T>

auto batchlas::ops::syev::candidates ( )

constexpr

Every compiled choice, once, in tie-break order (§6.3): native first, vendor last.

Definition at line 24 of file choice.hh.

Types

SyevChoice

using batchlas::ops::syev::SyevChoice = std::variant<Cta, CtaFused, Jacobi, Blocked, TwoStage, Vendor>

GPU natives: square, no NETLIB.

Definition at line 21 of file choice.hh.

Variables

spec

select::OpSpec batchlas::ops::syev::spec {Op::syev, select::Lib::solver}

inlineconstexpr

last resort (§5.5): blocked, vendor (CPU)

Definition at line 26 of file choice.hh.

key_names

std::array<std::string_view, 3> batchlas::ops::syev::key_names {"jobz:exact", "n:log:3", "batch:log"}

inlineconstexpr

Keys: jobz N|V exact; uplo is no key (Upper mirrors into Lower); n log weight 3; batch log.

Definition at line 29 of file choice.hh.

grid_n

std::array<int, 37> batchlas::ops::syev::grid_n

inlineconstexpr

Initial value:

{1,   2,   3,   4,   6,   8,   9,   12,  16,  20,  24,   25,   28,
                                            32,  33,  40,  48,  64,  96,  128, 192, 256, 257, 320, 321,  384,
                                            448, 449, 512, 513, 640, 768, 1024, 1025, 1536, 2048, 4096}

Both sides of every transcribed threshold plus a log grid; the transcriber (tuned/README.md) spells the same grid.

Definition at line 32 of file choice.hh.

grid_batch

std::array<int, 5> batchlas::ops::syev::grid_batch {128, 512, 2048, 8192, 32768}

inlineconstexpr

Definition at line 35 of file choice.hh.

Namespaces
namespace	detail

Classes
struct	Cta
	syev_cta: sytrd + steqr_cta, n <= 32 More...
struct	CtaFused
	syev_cta_fused: one kernel, n <= 32 More...
struct	Jacobi
	syev_jacobi_cta, n <= 32 More...
struct	Blocked
	syev_blocked: sytrd_blocked + stedc, any n More...
struct	TwoStage
	syev_two_stage: sy2sb + sb2st + stedc, any n More...
struct	Vendor
	backend::syev_vendor; needs the solver library More...