nvcc fatal : Unsupported gpu architecture 'compute_20'

[MoinFaraz]

I've got no issues in ./autogen.sh and ./configure Only when I make, I get this error

`nvcc -g -O2 -I . -Xptxas "-abi=no -v" -gencode=arch=compute_20,code="sm_20,compute_20" -gencode=arch=compute_30,code="sm_30,compute_30" -gencode=arch=compute_35,code="sm_35,compute_35" --maxrregcount=80 --ptxas-options=-v -I./compat/jansson -o cryptonight/cryptonight.o -c cryptonight/cryptonight.cu

nvcc fatal : Unsupported gpu architecture 'compute_20'

Makefile:1155: recipe for target 'cryptonight/cryptonight.o' failed

make[2]: *** [cryptonight/cryptonight.o] Error 1

make[2]: Leaving directory '/home/faraz/Downloads/ccminer-cryptonight-0.17'

Makefile:729: recipe for target 'all-recursive' failed

make[1]: *** [all-recursive] Error 1

make[1]: Leaving directory '/home/faraz/Downloads/ccminer-cryptonight-0.17'

Makefile:399: recipe for target 'all' failed

make: *** [all] Error 2 `

[CyberMix]

I have the same problem.

[pingiun]

I was able to fix this by commenting and uncommenting some lines in my Makefile at line 395. I was able to compile with these lines:

#NVCC_GENCODE           = -gencode=arch=compute_35,code=\"sm_35,compute_35\"
NVCC_GENCODE            = -gencode=arch=compute_30,code=\"sm_30,compute_30\" -gencode=arch=compute_35,code=\"sm_35,compute_35\"
#NVCC_GENCODE = -gencode=arch=code=\"sm_20\" -gencode=arch=compute_30,code=\"sm_30,compute_30\" -gencode=arch=compute_35,code=\"sm_35,compute_35\"

[pingiun]

After more research I found that the newest cuda version (9.0) doesn't support compute_20 anymore. This means that you have two options, disable the compute_20 target or install cuda version 8.0. If your GPU supports newer compute architectures you should use the newest cuda version and disable compute_20.

[MoinFaraz]

@pingiun Unfortunately, that didn't work out for me. I'm now getting this error.

nvcc -g -O2 -I . -Xptxas "-abi=no -v" -gencode=arch=compute_30,code="sm_30,compute_30" -gencode=arch=compute_35,code="sm_35,compute_35" --maxrregcount=80 --ptxas-options=-v -I./compat/jansson -o cryptonight/cryptonight.o -c cryptonight/cryptonight.cu ptxas error : Invalid value 'no' for option -abi. ptxas warning : Too big maxrregcount value specified 80, will be ignored ptxas fatal : Ptx assembly aborted due to errors Makefile:1155: recipe for target 'cryptonight/cryptonight.o' failed make[2]: *** [cryptonight/cryptonight.o] Error 255 make[2]: Leaving directory '/home/faraz/Downloads/ccminer-cryptonight-0.17' Makefile:729: recipe for target 'all-recursive' failed make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory '/home/faraz/Downloads/ccminer-cryptonight-0.17' Makefile:399: recipe for target 'all' failed make: *** [all] Error 2

[pingiun]

I had this too, and just removed the -abi option from the Makefile to solve it.

-------- Original Message -------- On Nov 1, 2017, 22:11, Faraz Moin wrote:

@pingiun Unfortunately, that didn't work out for me. I'm now getting this error.

nvcc -g -O2 -I . -Xptxas "-abi=no -v" -gencode=arch=compute_30,code="sm_30,compute_30" -gencode=arch=compute_35,code="sm_35,compute_35" --maxrregcount=80 --ptxas-options=-v -I./compat/jansson -o cryptonight/cryptonight.o -c cryptonight/cryptonight.cu ptxas error : Invalid value 'no' for option -abi. ptxas warning : Too big maxrregcount value specified 80, will be ignored ptxas fatal : Ptx assembly aborted due to errors Makefile:1155: recipe for target 'cryptonight/cryptonight.o' failed make[2]: *** [cryptonight/cryptonight.o] Error 255 make[2]: Leaving directory '/home/faraz/Downloads/ccminer-cryptonight-0.17' Makefile:729: recipe for target 'all-recursive' failed make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory '/home/faraz/Downloads/ccminer-cryptonight-0.17' Makefile:399: recipe for target 'all' failed make: *** [all] Error 2

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[MoinFaraz]

I've removed "-abi=no -v" from makefile, ran make again. Got this error:

ptxas fatal : Unknown option 'gencode' Makefile:1155: recipe for target 'cryptonight/cryptonight.o' failed make[2]: *** [cryptonight/cryptonight.o] Error 255 make[2]: Leaving directory '/home/faraz/Downloads/ccminer-cryptonight-0.17' Makefile:729: recipe for target 'all-recursive' failed make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory '/home/faraz/Downloads/ccminer-cryptonight-0.17' Makefile:399: recipe for target 'all' failed make: *** [all] Error 2

[pingiun]

Can't see what is the problem now. But you can try another miner instead, xmr-stak-nvidia for example

-------- Original Message -------- Subject: Re: [tsiv/ccminer-cryptonight] nvcc fatal : Unsupported gpu architecture 'compute_20' (#28) Local Time: November 1, 2017 10:22 PM UTC Time: November 1, 2017 9:22 PM From: [email protected] To: tsiv/ccminer-cryptonight [email protected] Jelle Besseling [email protected], Mention [email protected]

I've removed "-abi=no -v" from makefile, ran make again. Got this error:

ptxas fatal : Unknown option 'gencode' Makefile:1155: recipe for target 'cryptonight/cryptonight.o' failed make[2]: *** [cryptonight/cryptonight.o] Error 255 make[2]: Leaving directory '/home/faraz/Downloads/ccminer-cryptonight-0.17' Makefile:729: recipe for target 'all-recursive' failed make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory '/home/faraz/Downloads/ccminer-cryptonight-0.17' Makefile:399: recipe for target 'all' failed make: *** [all] Error 2

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.

[codejkn3]

Leave the "-v", that worked for me:

-Xptxas "-v" $(NVCC_GENCODE) --maxrregcount=80 .........

[unRARed]

Just in case it helps someone, combo of both @pingiun suggestions got it compiling successfully on my machine (16.04 w/ GTX 780). In Makefile replace NVCC_GENCODE block with :

NVCC_GENCODE = -gencode=arch=compute_30,code=\"sm_30,compute_30\" -gencode=arch=compute_35,code=\"sm_35,compute_35\"

and remove -abi=no (preserve the -v).

[shermanowen]

in the file Makefile.am find each line that contains $(NVCC) $(JANSSON_INCLUDES) -I. @CUDA_INCLUDES@ @CUDA_CFLAGS@ -gencode=arch=compute_20,code="sm_21,compute_20" -o $@ -c $< or $(NVCC) $(nvcc_FLAGS) -gencode=arch=compute_35,code="sm_35,compute_35" -o $@ -c $<

after salsa_kernel.cu and replace the whole line with

$(NVCC) $(nvcc_FLAGS) --maxrregcount=64 -o $@ -c $<

I don't know how this got left in but it allow a clean compile.

then run ./autogen.sh ./build.sh

[prajshr]

Still getting this error,

make all-recursive make[1]: Entering directory '/root/downloads/ccminer-cryptonight' Making all in compat make[2]: Entering directory '/root/downloads/ccminer-cryptonight/compat' Making all in jansson make[3]: Entering directory '/root/downloads/ccminer-cryptonight/compat/jansson' make[3]: Nothing to be done for 'all'. make[3]: Leaving directory '/root/downloads/ccminer-cryptonight/compat/jansson' make[3]: Entering directory '/root/downloads/ccminer-cryptonight/compat' make[3]: Nothing to be done for 'all-am'. make[3]: Leaving directory '/root/downloads/ccminer-cryptonight/compat' make[2]: Leaving directory '/root/downloads/ccminer-cryptonight/compat' make[2]: Entering directory '/root/downloads/ccminer-cryptonight' nvcc -g -O2 -I . -Xptxas "-v" -gencode=arch=compute_30,code="sm_30,compute_30" -gencode=arch=compute_35,code="sm_35,compute_35" --maxrregcount=80 --ptxas-options=-v -I./compat/jansson -o cryptonight/cryptonight.o -c cryptonight/cryptonight.cu /bin/bash: nvcc: command not found Makefile:1156: recipe for target 'cryptonight/cryptonight.o' failed make[2]: *** [cryptonight/cryptonight.o] Error 127 make[2]: Leaving directory '/root/downloads/ccminer-cryptonight' Makefile:730: recipe for target 'all-recursive' failed make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory '/root/downloads/ccminer-cryptonight' Makefile:400: recipe for target 'all' failed make: *** [all] Error 2