Question

嗨，我正在尝试使用mpi程序。要编译它，我需要mpi编译器，但是在安装它时出现错误。

sudo apt-get install openmpi-bin openmpi-common libopenmpi-dev
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  ibverbs-providers libfabric1 libhwloc-dev libhwloc-plugins libhwloc5
  libibverbs-dev libibverbs1 libnl-route-3-200 libnuma-dev libnuma1
  libopenmpi3 libpmix2 libpsm-infinipath1 libpsm2-2 librdmacm1
  ocl-icd-libopencl1
Suggested packages:
  libhwloc-contrib-plugins openmpi-doc opencl-icd
Recommended packages:
  libcoarrays-openmpi-dev
The following NEW packages will be installed:
  ibverbs-providers libfabric1 libhwloc-dev libhwloc-plugins libhwloc5
  libibverbs-dev libibverbs1 libnl-route-3-200 libnuma-dev libopenmpi-dev
  libopenmpi3 libpmix2 libpsm-infinipath1 libpsm2-2 librdmacm1
  ocl-icd-libopencl1 openmpi-bin openmpi-common
The following packages will be upgraded:
  libnuma1
1 upgraded, 18 newly installed, 0 to remove and 252 not upgraded.
Need to get 5 271 kB/5 624 kB of archives.
After this operation, 22,4 MB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Err:1 http://archive.ubuntu.com/ubuntu cosmic-updates/main amd64 libnuma1 amd64 2.0.11-2.2ubuntu0.1
  404  Not Found [IP: 91.189.88.152 80]
...

感谢您的合作。

Answer 1

每https://wiki.ubuntu.com/CosmicCuttlefish/ReleaseNotes

Ubuntu 18.10的支持期限为9个月，直到2019年7月。如果需要，长期支持，建议您改用Ubuntu 18.04 LTS。

您最好的选择是升级到较新的发行版（或降级为18.04）。您也许还可以找到一些镜像，并使用它们来安装缺少的软件包。

Answer 2

您需要更新您的sources.list，并使用其他镜像。

与described in this post一样，您应在您的 /etc/apt/sources.list 中用using System.Collections; using System.Collections.Generic; using UnityEngine; public class MyClass { public int[] myNumber; public MyClass ShallowCopy() { return (MyClass)this.MemberwiseClone(); } } public class Test : MonoBehaviour { Dictionary<string, MyClass> myDictionary1 = new Dictionary<string, MyClass>(); Dictionary<string, MyClass> myDictionary2 = new Dictionary<string, MyClass>(); void Start() { myDictionary1.Add("a", new MyClass() { myNumber = new int[] { 1, 1 } }); myDictionary1.Add("b", new MyClass() { myNumber = new int[] { 2, 2 } }); myDictionary2["b"] = myDictionary1["a"].ShallowCopy(); myDictionary2["b"].myNumber[0] = 3; Debug.Log(myDictionary1["a"].myNumber[0]); //output 3, I'd want it to still be 1 } }用public MyClass DeepCopy() { MyClass other = (MyClass)this.MemberwiseClone(); other.myNumber = ?????????????????????? //int[] deep copy return other; }替换所有URL。然后，您运行http://archive.ubuntu.com/…，然后可以重新安装软件包。

请注意，您确实应该考虑对其进行升级，但仍然不会太麻烦。

为什么我出现了mpicc安装错误？

2 个答案: