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I am trying to get Microsoft's Quantum Development Kit to work on a CentOS 7 machine. I followed the instructions for installing dotnet, and the trivial dotnet 'Hello World' works. I also installed Visual Studio from yum and installed the Microsoft Quantum Development Kit for Visual Studio from the Visual Studio explorer.

After cloning their github repo. I try:

dotnet_vm: Teleportation$ cd ~/Quantum/Samples/Teleportation/
dotnet_vm: Teleportation$ scl enable rh-dotnet21 bash
dotnet_vm: Teleportation$ dotnet run
/home/user/Quantum/Microsoft.Quantum.Canon/Microsoft.Quantum.Canon.csproj : warning NU1603: Microsoft.Quantum.Canon depends on NETStandard.Library (>= 2.0.2-servicing-25519-03) but NETStandard.Library 2.0.2-servicing-25519-03 was not found. An approximate best match of NETStandard.Library 2.0.2 was resolved. [/home/user/Quantum/Samples/Teleportation/TeleportationSample.csproj]
/home/user/Quantum/Microsoft.Quantum.Canon/Microsoft.Quantum.Canon.csproj : warning NU1603: Microsoft.Quantum.Canon depends on NETStandard.Library (>= 2.0.2-servicing-25519-03) but NETStandard.Library 2.0.2-servicing-25519-03 was not found. An approximate best match of NETStandard.Library 2.0.2 was resolved.

Unhandled Exception: System.DllNotFoundException: Unable to load shared library 'Microsoft.Quantum.Simulator.Runtime.dll' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: libMicrosoft.Quantum.Simulator.Runtime.dll: cannot open shared object file: No such file or directory
   at Microsoft.Quantum.Simulation.Simulators.QuantumSimulator.Init()
   at Microsoft.Quantum.Simulation.Simulators.QuantumSimulator..ctor(Boolean throwOnReleasingQubitsNotInZeroState, Nullable`1 randomNumberGeneratorSeed, Boolean disableBorrowing)
   at Microsoft.Quantum.Examples.Teleportation.Program.Main(String[] args) in /home/user/Quantum/Samples/Teleportation/Program.cs:line 13

This looks like the same error. I tried what I thought was the linux equivalent solution : 

cp ~/.nuget/packages/microsoft.quantum.development.kit/0.2.1809.701-preview/runtimes/linux-x64/native/Microsoft.Quantum.Simulator.Runtime.dll ~/.nuget/packages/microsoft.quantum.development.kit/0.2.1809.701-preview/lib/netstandard2.0/

I still get the same Error. Also, I do not have the AVX instruction set enabled on my computer (which might be a potential issue?).

E.g. 

 grep flags /proc/cpuinfo 
flags       : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm nopl pni cx16 hypervisor lahf_lm abm
flags       : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx lm nopl pni cx16 hypervisor lahf_lm abm
dotnet_vm: Teleportation$

I do not have any Windows experience and these do not look like typical Linux libraries (not .so or .a).

QUESTION: How do I get this to work?

Mariia Mykhailova
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irritable_phd_syndrome
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2 Answers2

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The Microsoft.Quantum.Simulator.Runtime.dll is a normal Linux library (.so), it's just renamed to make it easier to support cross-platform.

It does look like a similar problem from the one that you linked, however you should look into the Ubuntu answer: use ldd to figure out what the dependencies are and install anything that is missing. As in that post, the problem most probably is that you're missing libgomp, but I'm not familiar with CentOS.

Not having AVX enabled will make things slower, specially when dealing with lots of qubits, but you should still be able to run.

El capi
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Following El capi's answer, I looked at the libraries linked to : e.g.

dotnet_vm: gcc-5.1.0$ ldd /home/user/.nuget/packages/microsoft.quantum.development.kit/0.2.1809.701-preview/lib/netstandard2.0/Microsoft.Quantum.Simulator.Runtime.dll
/home/user/.nuget/packages/microsoft.quantum.development.kit/0.2.1809.701-preview/lib/netstandard2.0/Microsoft.Quantum.Simulator.Runtime.dll: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by /home/user/.nuget/packages/microsoft.quantum.development.kit/0.2.1809.701-preview/lib/netstandard2.0/Microsoft.Quantum.Simulator.Runtime.dll)
/home/user/.nuget/packages/microsoft.quantum.development.kit/0.2.1809.701-preview/lib/netstandard2.0/Microsoft.Quantum.Simulator.Runtime.dll: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /home/user/.nuget/packages/microsoft.quantum.development.kit/0.2.1809.701-preview/lib/netstandard2.0/Microsoft.Quantum.Simulator.Runtime.dll)
/home/user/.nuget/packages/microsoft.quantum.development.kit/0.2.1809.701-preview/lib/netstandard2.0/Microsoft.Quantum.Simulator.Runtime.dll: /lib64/libstdc++.so.6: version `CXXABI_1.3.9' not found (required by /home/user/.nuget/packages/microsoft.quantum.development.kit/0.2.1809.701-preview/lib/netstandard2.0/Microsoft.Quantum.Simulator.Runtime.dll)
    linux-vdso.so.1 =>  (0x00007fff2f12b000)
    libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f1fb5fee000)
    libm.so.6 => /lib64/libm.so.6 (0x00007f1fb5cec000)
    libgomp.so.1 => /lib64/libgomp.so.1 (0x00007f1fb5ac6000)
    libc.so.6 => /lib64/libc.so.6 (0x00007f1fb56f9000)
    /lib64/ld-linux-x86-64.so.2 (0x00007f1fb656a000)

To resolve this versioning issue with regards to GLIBCXX_3.4.21, I installed gcc-5.1.0 (and its dependencies). Then running the code:

dotnet_vm: Teleportation$ dotnet run
/home/user/Quantum/Microsoft.Quantum.Canon/Microsoft.Quantum.Canon.csproj : warning NU1603: Microsoft.Quantum.Canon depends on NETStandard.Library (>= 2.0.2-servicing-25519-03) but NETStandard.Library 2.0.2-servicing-25519-03 was not found. An approximate best match of NETStandard.Library 2.0.2 was resolved. [/home/user/Quantum/Samples/Teleportation/TeleportationSample.csproj]
/home/user/Quantum/Microsoft.Quantum.Canon/Microsoft.Quantum.Canon.csproj : warning NU1603: Microsoft.Quantum.Canon depends on NETStandard.Library (>= 2.0.2-servicing-25519-03) but NETStandard.Library 2.0.2-servicing-25519-03 was not found. An approximate best match of NETStandard.Library 2.0.2 was resolved.
Round 0:    Sent True,  got True.
Teleportation successful!!

Round 1:    Sent False, got False.
Teleportation successful!!

Round 2:    Sent True,  got True.
Teleportation successful!!

Round 3:    Sent False, got False.
Teleportation successful!!

Round 4:    Sent True,  got True.
Teleportation successful!!

Round 5:    Sent False, got False.
Teleportation successful!!

Round 6:    Sent True,  got True.
Teleportation successful!!

Round 7:    Sent False, got False.
Teleportation successful!!



Press Enter to continue...

It worked!

irritable_phd_syndrome
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