Hello,

As for I am not familiar with the gem5. I would like to custom disk images 
following the gem5.googlesource.com  gem5-resources to make a PARSEC disk 
image. I followed the instructions as the README.me, but I encounter some 
errors.


The error information is shown as follow:


qemu: output will be in this color.

==> qemu: Retrieving ISO
==> qemu: Trying 
http://old-releases.ubuntu.com/releases/18.04.2/ubuntu-18.04.2-server-amd64.iso
==> qemu: Trying 
http://old-releases.ubuntu.com/releases/18.04.2/ubuntu-18.04.2-server-amd64.iso?checksum=md5%3A34416ff83179728d54583bf3f18d42d2
==> qemu: 
http://old-releases.ubuntu.com/releases/18.04.2/ubuntu-18.04.2-server-amd64.iso?checksum=md5%3A34416ff83179728d54583bf3f18d42d2
 => 
/home/gem5/parsec/disk-image/packer_cache/e94c06241a5e6ba0c4b9618ddcda39ba2ee27e9a.iso
==> qemu: Creating floppy disk...
    qemu: Copying files flatly from floppy_files
    qemu: Copying file: shared/preseed.cfg
    qemu: Done copying files from floppy_files
    qemu: Collecting paths from floppy_dirs
    qemu: Resulting paths from floppy_dirs : []
    qemu: Done copying paths from floppy_dirs
==> qemu: Creating required virtual machine disks
==> qemu: Starting HTTP server on port 8413
==> qemu: Found port for communicator (SSH, WinRM, etc): 2359.
==> qemu: Looking for available port between 5900 and 6000 on 127.0.0.1
==> qemu: Starting VM, booting from CD-ROM
    qemu: The VM will be run headless, without a GUI. If you 
want to
    qemu: view the screen of the VM, connect via VNC without a 
password to
    qemu: vnc://127.0.0.1:5942
==> qemu: Overriding defaults Qemu arguments with QemuArgs...
==> qemu: Error launching VM: Qemu failed to start. Please run with 
PACKER_LOG=1 to get more info.
==> qemu: Deleting output directory...
Build 'qemu' errored: Build was halted.


What can I do to solve the problem?
And another question is that how can I run MPI  in the FS mode?


Thanks in advance.


Zhang Meng
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