Hello Bernard, all,
the failure is due to a change in ValueQ:
https://reference.wolfram.com/language/ref/ValueQ.html
which was updated in 12.2 (see "Details") and old behaviour would be restored by using ValueQ[_, Method->"Legacy"] but I have no clue of what that would mean.
The failure goes away if one patches Kranc (though the issue may exist in other places as well, ValueQ seems pretty basic functionality to me):
diff --git a/Tools/CodeGen/TensorTools.m b/Tools/CodeGen/TensorTools.m index 9e53a0a..1f17b35 100644 --- a/Tools/CodeGen/TensorTools.m +++ b/Tools/CodeGen/TensorTools.m @@ -301,7 +301,7 @@ DefineTensor[T_] := Module[ {c}, c = tensorCharacter[{is}]; - If[!ValueQ[TensorCharacter[T]], + If[!ValueQ[TensorCharacter[T], Method -> "Legacy"], TensorCharacter[T] = c, (* else *) If[!charactersMatch[c,TensorCharacter[T]],
Best to report this on the Kranc issue tracker https://github.com/ianhinder/Kranc/issues I'd say.
Note that "Method -> Legacy" probably *breaks* on older MMA versions (where the option may not yet exist) so is not a fix we can apply to Kranc in that case.
Yours, Roland
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