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License: Apache License 2.0
Distributed Memory DMRG with ITensor like interface. Uses CTF for dense/sparse tensors manipulation; HDF5 storage.
License: Apache License 2.0
A number of non DMRG related API calls for tensors (+=
,-=
, etc) currently have assert(1==2)
and were not rewritten yet for the CTF backend.
Files like tensor_cg.cpp
and assert.cpp
should also contain code that hasn't made its way back yet too.
ctf DMRG has repeated code which can be cleaned up
We make copies of tensors just to modify their indices, we should instead just pass the data as a const and then do the index operations. This might clean up the permuted index interface too
There are typedefs for hptt flags, but this is meaningless as everything is through ctf
now. Should be a simple removal so that -DUSE_HPTT
doesn't change anything
There's some breaking change between v1.1.2
and later versions of tblis.
The code has been updated so that the API works on v1.1.2
and v1.2.0
(with the exception of some dgemm_
call). Orthogonality is broken after SVD for the second site However.
When comparing before and after, all the davidson eigenvalues are correct but the data layout when being passed to SVD
seems to be different.
Program crashes if compiled without HPTT, using quantum numbers, and OMP_NUM_THREADS
!=1
CTF wants int
s as dimensions, we store them as int
s inside q(s)tensor but as unsigned
elsewhere
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