Root as a conda package on an older computer

ROOT
1

Dear community,

I tried to use miniconda3 to install ROOT:

; conda create -n our_root root -c conda-forge

and it seemed to have finished with no errors. Then activation also worked:

; conda activate our_root

However, running

(our_root) [conda@void ~]$ python
Python 3.8.10 | packaged by conda-forge | (default, May 11 2021, 07:01:05) 
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import ROOT

 *** Break *** <TUnixSystem::DispatchSignals>: illegal instruction
 Generating stack trace...
 0x00007f30d932b666 in ROOT::Internal::GetROOT1() + 0x66 from /opt/miniconda3/envs/our_root/bin/../lib/libCore.so.6.24
 0x00007f30d931e214 in <unknown> from /opt/miniconda3/envs/our_root/bin/../lib/libCore.so.6.24
 0x00007f30d9fc1f2e in <unknown> from /lib64/ld-linux-x86-64.so.2
 0x00007f30d9fc2010 in <unknown> from /lib64/ld-linux-x86-64.so.2
 0x00007f30d9d983bd in _dl_catch_exception at /builddir/glibc-2.32/elf/dl-error-skeleton.c:184 from /usr/lib/libc.so.6
 0x00007f30d9fc62a4 in <unknown> from /lib64/ld-linux-x86-64.so.2
 0x00007f30d9d98360 in _dl_catch_exception at /builddir/glibc-2.32/elf/dl-error-skeleton.c:209 from /usr/lib/libc.so.6
 0x00007f30d9fc5b2a in <unknown> from /lib64/ld-linux-x86-64.so.2
 0x00007f30d9f7c258 in <unknown> from /usr/lib/libdl.so.2
 0x00007f30d9d98360 in _dl_catch_exception at /builddir/glibc-2.32/elf/dl-error-skeleton.c:209 from /usr/lib/libc.so.6
 0x00007f30d9d9841f in _dl_catch_error at /builddir/glibc-2.32/elf/dl-error-skeleton.c:228 from /usr/lib/libc.so.6
 0x00007f30d9f7ca65 in <unknown> from /usr/lib/libdl.so.2
 0x00007f30d9f7c2e4 in dlopen at /builddir/glibc-2.32/dlfcn/dlopen.c:87 from /usr/lib/libdl.so.2
 0x00005609676557a7 in _PyImport_FindSharedFuncptr + 0x87 from python
 0x000056096765a1e3 in _PyImport_LoadDynamicModuleWithSpec + 0x163 from python
 0x000056096765bf64 in <unknown> from python
 0x000056096751a88b in <unknown> from python
 0x000056096752581e in PyVectorcall_Call + 0x6e from python
 0x00005609675cb2da in _PyEval_EvalFrameDefault + 0x5c4a from python
 0x00005609675ac433 in _PyEval_EvalCodeWithName + 0x2c3 from python
 0x00005609675ad818 in _PyFunction_Vectorcall + 0x378 from python
 0x00005609675ca3c3 in _PyEval_EvalFrameDefault + 0x4d33 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x00005609675c60f3 in _PyEval_EvalFrameDefault + 0xa63 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x00005609675c5fd7 in _PyEval_EvalFrameDefault + 0x947 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x00005609675c5fd7 in _PyEval_EvalFrameDefault + 0x947 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x00005609675c5fd7 in _PyEval_EvalFrameDefault + 0x947 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x00005609675c5fd7 in _PyEval_EvalFrameDefault + 0x947 from python
 0x00005609675ac433 in _PyEval_EvalCodeWithName + 0x2c3 from python
 0x00005609675ad818 in _PyFunction_Vectorcall + 0x378 from python
 0x00005609675ca3c3 in _PyEval_EvalFrameDefault + 0x4d33 from python
 0x00005609675ac433 in _PyEval_EvalCodeWithName + 0x2c3 from python
 0x00005609675ad818 in _PyFunction_Vectorcall + 0x378 from python
 0x00005609675ca3c3 in _PyEval_EvalFrameDefault + 0x4d33 from python
 0x00005609675ac433 in _PyEval_EvalCodeWithName + 0x2c3 from python
 0x00005609675ad499 in PyEval_EvalCodeEx + 0x39 from python
 0x0000560967648ecb in PyEval_EvalCode + 0x1b from python
 0x0000560967669c4e in <unknown> from python
 0x000056096751a88b in <unknown> from python
 0x000056096752581e in PyVectorcall_Call + 0x6e from python
 0x00005609675cb2da in _PyEval_EvalFrameDefault + 0x5c4a from python
 0x00005609675ac433 in _PyEval_EvalCodeWithName + 0x2c3 from python
 0x00005609675ad818 in _PyFunction_Vectorcall + 0x378 from python
 0x00005609675ca3c3 in _PyEval_EvalFrameDefault + 0x4d33 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x00005609675c60f3 in _PyEval_EvalFrameDefault + 0xa63 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x00005609675c5fd7 in _PyEval_EvalFrameDefault + 0x947 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x00005609675c5fd7 in _PyEval_EvalFrameDefault + 0x947 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x000056096752f310 in <unknown> from python
 0x00005609675b1a8f in _PyObject_CallMethodIdObjArgs + 0x25f from python
 0x000056096750576e in PyImport_ImportModuleLevelObject + 0x84e from python
 0x00005609675c8d37 in _PyEval_EvalFrameDefault + 0x36a7 from python
 0x00005609675ac433 in _PyEval_EvalCodeWithName + 0x2c3 from python
 0x00005609675ad499 in PyEval_EvalCodeEx + 0x39 from python
 0x0000560967648ecb in PyEval_EvalCode + 0x1b from python
 0x0000560967669c4e in <unknown> from python
 0x000056096751a88b in <unknown> from python
 0x000056096752581e in PyVectorcall_Call + 0x6e from python
 0x00005609675cb2da in _PyEval_EvalFrameDefault + 0x5c4a from python
 0x00005609675ac433 in _PyEval_EvalCodeWithName + 0x2c3 from python
 0x00005609675ad818 in _PyFunction_Vectorcall + 0x378 from python
 0x00005609675ca3c3 in _PyEval_EvalFrameDefault + 0x4d33 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x00005609675c60f3 in _PyEval_EvalFrameDefault + 0xa63 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x00005609675c5fd7 in _PyEval_EvalFrameDefault + 0x947 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x00005609675c5fd7 in _PyEval_EvalFrameDefault + 0x947 from python
 0x00005609675ad646 in _PyFunction_Vectorcall + 0x1a6 from python
 0x000056096752f310 in <unknown> from python
 0x00005609675b1a8f in _PyObject_CallMethodIdObjArgs + 0x25f from python
 0x000056096750576e in PyImport_ImportModuleLevelObject + 0x84e from python
 0x00005609675c8d37 in _PyEval_EvalFrameDefault + 0x36a7 from python
 0x00005609675ac433 in _PyEval_EvalCodeWithName + 0x2c3 from python
 0x00005609675ad499 in PyEval_EvalCodeEx + 0x39 from python
 0x0000560967648ecb in PyEval_EvalCode + 0x1b from python
 0x0000560967648f63 in <unknown> from python
 0x0000560967665033 in <unknown> from python
 0x00005609674ea72b in <unknown> from python
 0x00005609674ea8d6 in PyRun_InteractiveLoopFlags + 0xeb from python
 0x00005609674ea973 in <unknown> from python
 0x00005609674eab2a in <unknown> from python
 0x000056096766a939 in Py_BytesMain + 0x39 from python
 0x00007f30d9c87e0a in __libc_start_main at /builddir/glibc-2.32/csu/../csu/libc-start.c:314 from /usr/lib/libc.so.6
 0x00005609675def39 in <unknown> from python
Illegal instruction

ends apparently unsuccessfully.

I have no hint about what I can do. This is the 1st time I use miniconda, ROOT is the only package I tried to install. The OS is current void linux (that’s why I opted for conda, since there are no packages for this system) running on old hardware:

 (our_root) [conda@void ~]$ cat /proc/cpuinfo
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 15
model           : 47
model name      : AMD Athlon(tm) 64 Processor 3800+
stepping        : 2
cpu MHz         : 1000.000
cache size      : 512 KB
physical id     : 0
siblings        : 1
core id         : 0
cpu cores       : 1
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt lm 3dnowext 3dnow rep_good nopl cpuid pni lahf_lm 3dnowprefetch vmmcall
bugs            : fxsave_leak sysret_ss_attrs null_seg swapgs_fence spectre_v1 spectre_v2
bogomips        : 4822.05
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc

NB. no avx et friends.

Can anybody help? I didn’t find explicit relevant requirements that perhaps need to be met but our system fulfil.

Thank you
Rudolf Sykora

2

Hello,

What happens if you run root (the ROOT prompt) and type some C++ there, does it work? Is it a PyROOT only issue?

My guess is that the conda ROOT was compiled with AVX support and this causes the illegal instruction error on your machine. Mentioning @chrisburr in case he wants to comment.

3

The issue will be with SSE 4.2 not AVX. It’s caused a few issues for people so I should roll back that change and stick to plain x86_64. I’ll do this in the next couple of days and follow up here.

1 Like
4

@etejedor

Hello,

when I run

root

from a command prompt, seemingly nothing happens. I get the shell prompt back, ie., not ROOT prompt. I do not see any error message, either.

Best regards
Ruda

5

Hello, please, is there anything new regarding this issue? (Or should we rather try and recompile ourselves?) Thanks for the information.

6

Ok, I am giving up with this. Just do not promise next time that you would do something “within couple of days”; I am fine with saying one has no time or whatever. But we’ve been waiting 14 days just to see, this will probably not work (and noone reacts…)

7

@rudolfII could you please add issue here: Issues · conda-forge/root-feedstock · GitHub
(it is definitely easiest way to track issues through GH issues)

8

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.

9

“Illegal instruction” likely means that conda built for a different architecture than what your CPU can consume. Maybe your CPU cannot handle SSE 4.1 but the Conda build has that instruction set enabled. You could - if that’s an option for you - resort to using pre-built binaries, e.g from the latest release. See Installing ROOT - ROOT