0 votes
asked by (150 points)

Hi,

after updating my macOS system, I get a lot of warnings when I compile my iTensor DMRG (it is the DMRG that I found in the sample folder with its Makefile).

g++ -m64 -std=c++11 -fPIC -c -I. -I/Users/giuseppe/Desktop/iTensor/ITensor -O2 -DNDEBUG -Wall -o dmrgMapIsing.o dmrgMapIsing.cc
g++ -m64 -std=c++11 -fPIC -I. -I/Users/giuseppe/Desktop/iTensor/ITensor -O2 -DNDEBUG -Wall dmrgMapIsing.o -o dmrgMapIsing -L/Users/giuseppe/Desktop/iTensor/ITensor/lib -litensor -framework Accelerate
ld: warning: text-based stub file /System/Library/Frameworks//Accelerate.framework/Accelerate.tbd and library file /System/Library/Frameworks//Accelerate.framework/Accelerate are out of sync. Falling back to library file for linking.
ld: warning: text-based stub file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage.tbd and library file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vImage.framework/Versions/A/vImage are out of sync. Falling back to library file for linking.
ld: warning: text-based stub file /System/Library/Frameworks//vecLib.framework/Versions/A/vecLib.tbd and library file /System/Library/Frameworks//vecLib.framework/Versions/A/vecLib are out of sync. Falling back to library file for linking.
ld: warning: text-based stub file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvMisc.tbd and library file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvMisc.dylib are out of sync. Falling back to library file for linking.
ld: warning: text-based stub file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.tbd and library file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib are out of sync. Falling back to library file for linking.
ld: warning: text-based stub file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.tbd and library file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib are out of sync. Falling back to library file for linking.
ld: warning: text-based stub file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.tbd and library file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib are out of sync. Falling back to library file for linking.
ld: warning: text-based stub file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLinearAlgebra.tbd and library file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libLinearAlgebra.dylib are out of sync. Falling back to library file for linking.
ld: warning: text-based stub file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libSparseBLAS.tbd and library file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libSparseBLAS.dylib are out of sync. Falling back to library file for linking.
ld: warning: text-based stub file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libQuadrature.tbd and library file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libQuadrature.dylib are out of sync. Falling back to library file for linking.
ld: warning: text-based stub file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBNNS.tbd and library file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBNNS.dylib are out of sync. Falling back to library file for linking.
ld: warning: text-based stub file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libSparse.tbd and library file /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libSparse.dylib are out of sync. Falling back to library file for linking.

The code seems to run however, but I want to be sure that these warnings do not affect the correct execution.

Thank you very much,
Giuseppe

1 Answer

0 votes
answered by (28.2k points)

Dear Giuseppe,
I can't say whether this issue will affect the working of ITensor, but fortunately there is a fix for it, so I'd recommend doing the fix then recompiling ITensor (and hopefully then you won't see the warnings). Here is a link explaining the fix:

http://sd.jtimothyking.com/2018/07/26/stub-file-and-library-file-out-of-sync/

Finally, if you can get Intel MKL I'd strongly recommend that over Apple Accelerate / VecLib. MKL now has a free license. The reason I recommend it is that I've found some cases over the years where Accelerate gives less accurate results than MKL on certain tough cases (matrix decompositions involving small numbers etc.) and as a bonus, MKL is also much faster.

Best regards,
Miles

commented by (150 points)
Thank you very much for the answer. Unfortunately, I have already tried the solution proposed in the link, but nothing changes (I have macOS Mojave 10.14.1).

Eventually, I will try with MKL.

Giuseppe
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