fast_tensor_ctr

A clever way to multiply symmetric tensors. More...

Collaboration diagram for fast_tensor_ctr:

Functions
bool	check_sym (Tensor<> &tsr)
int64_t	fact (int64_t n)
int64_t	choose (int64_t n, int64_t k)
int64_t	chchoose (int64_t n, int64_t k)
void	chi (char const *idx, int idx_len, int p_len, int q_len, int *npair, char ***idx_p, char ***idx_q)
void	chi (char const *idx, int idx_len, int p_len, int *npair, char ***idx_p)
int	fast_tensor_ctr (int n, int s, int t, int v, World &ctf)
char *	getCmdOption (char **begin, char **end, const std::string &option)
int	main (int argc, char **argv)

Detailed Description

A clever way to multiply symmetric tensors.

Function Documentation

int64_t chchoose	(	int64_t	n,
		int64_t	k
	)

Definition at line 47 of file fast_tensor_ctr.cxx.

References fact().

bool check_sym

(

Tensor<> &

tsr

)

Definition at line 12 of file fast_tensor_ctr.cxx.

References ctf.core::dim, CTF_int::tensor::lens, CTF::Tensor< dtype >::norm2(), CTF_int::tensor::order, CTF_int::tensor::sym, and CTF_int::tensor::wrld.

Referenced by fast_tensor_ctr().

void chi	(	char const *	idx,
		int	idx_len,
		int	p_len,
		int	q_len,
		int *	npair,
		char ***	idx_p,
		char ***	idx_q
	)

Definition at line 51 of file fast_tensor_ctr.cxx.

References choose(), and ctf.core::np().

Referenced by chi(), and fast_tensor_ctr().

void chi	(	char const *	idx,
		int	idx_len,
		int	p_len,
		int *	npair,
		char ***	idx_p
	)

Definition at line 180 of file fast_tensor_ctr.cxx.

References chi().

int64_t choose	(	int64_t	n,
		int64_t	k
	)

Definition at line 43 of file fast_tensor_ctr.cxx.

References fact().

Referenced by chi(), and fast_tensor_ctr().

int64_t fact

(

int64_t

n

)

Definition at line 35 of file fast_tensor_ctr.cxx.

Referenced by chchoose(), and choose().

int fast_tensor_ctr	(	int	n,
		int	s,
		int	t,
		int	v,
		World &	ctf
	)

Definition at line 191 of file fast_tensor_ctr.cxx.

References check_sym(), chi(), choose(), CTF::World::comm, CTF::Tensor< dtype >::norm2(), NS, ctf.core::rank(), CTF::Tensor< dtype >::read_local(), and CTF::Tensor< dtype >::write().

Referenced by main().

char* getCmdOption	(	char **	begin,
		char **	end,
		const std::string &	option
	)

Definition at line 449 of file fast_tensor_ctr.cxx.

Referenced by main().

int main	(	int	argc,
		char **	argv
	)

Definition at line 460 of file fast_tensor_ctr.cxx.

References fast_tensor_ctr(), getCmdOption(), ctf.core::np(), and ctf.core::rank().