Merge branch 'patch-1' into 'master'

Update GPU-Cluster Requirements.md

See merge request !2

GPU-Cluster Requirements.md

 # Current Situation
 
 ## Hardware Stack
+Currently planned node-configuration:
+- 2x Intel Xeon 6230 CPU
+- 192 GB RAM
+- 8 GPUs
+
+We are currently looking into two possible GPU configurations:
+- 80% SP / 20% DP GPUs (72x RTX 2080Ti / 16x V100)
+- 60% SP / 40% DP GPUs (48x RTX 2080Ti / 24x V100)
 
 ## Software Stack
+Currently planned:
+- Scientific Linux 7 (to ensure compatibility with the existing CPU-Cluster)
+- In the long future we are looking to migrate to CentOS since the support for SL7 got discontinued.
 
 # Additional Information
+Difference between SingePrecision and DoublePrecision:  
+[simple explanation](https://www.thecrazyprogrammer.com/2018/04/single-precision-vs-double-precision.html)  
+Desktop GPUs like the RTX2080 are SingePrecision cards, where professional ones like the V100 are DoublePrecision ones.
 
 # Requirements