@@ -109,15 +109,16 @@ Now copy the contents of the field *Public key for pasting into OpenSSH authoriz
...
@@ -109,15 +109,16 @@ Now copy the contents of the field *Public key for pasting into OpenSSH authoriz


There is a known issue currently with the Windows implementation of OpenSSH. If you see the error message
:::info
There is a known issue currently with the Windows implementation of OpenSSH. If you see the error message
```
```
Corrupted MAC on input.
Corrupted MAC on input.
ssh_dispatch_run_fatal: Connection to x.x.x.x port 22: message authentication code incorrect
ssh_dispatch_run_fatal: Connection to x.x.x.x port 22: message authentication code incorrect
```
```
while trying to log in, please follow the guidance [here][CorruptMAC]
while trying to log in, please follow the guidance [here](https://apps.fz-juelich.de/jsc/hps/jureca/known-issues.html#mac-algorithm-related-ssh-connection-issues-from-windows).
All systems at JSC have nodes which are accelerated by General Purpose Graphics Processing Units (GPGPUs or just GPUs).
All systems at JSC have nodes which are accelerated by General Purpose Graphics Processing Units (GPGPUs or just GPUs).
In this section, we will discuss basic aspects of using them, inspecting them during execution, assigning them to particular MPI tasks and talking a little about network architecture, which can be important for efficient usage.
In this section, we will discuss basic aspects of using them, inspecting them during execution, assigning them to particular MPI tasks and talking a little about network architecture, which can be important for efficient usage.
# Using GPUs
Since the GPUs are all made by NVIDIA, using them is accomplished through their [CUDA SDK](https://docs.nvidia.com/cuda/).
Since the GPUs are all made by NVIDIA, using them is accomplished through their [CUDA SDK](https://docs.nvidia.com/cuda/).