[Users] McLachlan code generation working in current stable ET release?

[Roland Haas]

Hello Bernard,

yes, fails for me with MMA 12.2.0 as well:

$ make McLachlan_BSSN.out
rm -rf ML_BSSN ML_BSSN_Helper
env ML_CODE=BSSN ./runmath.sh McLachlan_BSSN.m McLachlan_BSSN
Using Kranc installation at ../../../repos/Kranc/Bin/..
Mathematica 12.2.0 Kernel for Linux x86 (64-bit)
Copyright 1988-2020 Wolfram Research, Inc.
Profiling disabled

MapThread::mptd: Object TensorTools`Private`TensorCharacter[dir] at position {2, 2} in MapThread[NumberQ[#1] || NumberQ[#2] || #1 === #2 & , {{u}, TensorTools`Private`TensorCharacter[dir]}] has only 0 of required 1 dimensions.

MapThread::mptd: Object TensorTools`Private`TensorCharacter[epsdiss] at position {2, 2} in MapThread[NumberQ[#1] || NumberQ[#2] || #1 === #2 & , {{u}, TensorTools`Private`TensorCharacter[epsdiss]}] has only 0 of required 1 dimensions.

Riffle::list: List expected at position 1 in Riffle[TensorTools`Private`TensorCharacter[gt], ,].

StringJoin::string: String expected at position 1 in StringJoin[Riffle[TensorTools`Private`TensorCharacter[gt], ,]].

StringJoin::string: String expected at position 2 in Tensor indices in gt[la,lb] do not match those used previously: gt[<>Riffle[TensorTools`Private`TensorCharacter[gt], ,]<>].
Error:
StringJoin["Tensor indices in gt[la,lb] do not match those used previously: gt[", Riffle[TensorTools`Private`TensorCharacter[gt], ","], "]"]
make: *** [Makefile:17: McLachlan_BSSN.out] Error 1

Yours,
Roland

> Hello Bernard,
> 
> > Hi. I'm trying to regenerate the McLachlan ML_BSSN thorn by running the
> > Mathematica-based scripts on my Macbook. The process is failing, and I'd
> > like to know if it's an issue with my Mathematica installation or the
> > McLachlan code?
> Being the person who last regenerated McLachlan for the last ET
> release: I just gave this a try with 12.0.0 on Linux and there at least
> 
> env ML_CODE=BSSN ./runmath.sh McLachlan_BSSN.m McLachlan_BSSN
> 
> works.
> 
> I will update to 12.2.1 and see what happens. If that fails then at
> least we know that we can check Wolframs docs do see what they
> functionality they removed to make this fail.
> 
> Yours,
> Roland
> 


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