Summarize all host information.

def all_host_infos():
    '''
        Summarize all host information.
    '''
    output = []
    output.append(["Operating system", os()])
    output.append(["CPUID information", cpu()])
    output.append(["CC information", compiler()])
    output.append(["JDK information", from_cmd("java -version")])
    output.append(["MPI information", from_cmd("mpirun -version")])
    output.append(["Scala information", from_cmd("scala -version")])
    output.append(["OpenCL headers", from_cmd(
        "find /usr/include|grep opencl.h")])
    output.append(["OpenCL libraries", from_cmd(
        "find /usr/lib/ -iname '*opencl*'")])
    output.append(["NVidia SMI", from_cmd("nvidia-smi -q")])
    output.append(["OpenCL Details", opencl()])
    return output