Ensure backward compatibility for fp8 datatypes (#126)

* Ensure backward compatibility for fp8 datatypes

Signed-off-by: ravaidya <ravaidya@amd.com>

* Update code comments

Signed-off-by: ravaidya <ravaidya@amd.com>

---------

Signed-off-by: ravaidya <ravaidya@amd.com>

[ROCm/rccl-tests commit: 0abe3c80bb]

projects/rccl-tests/src/common.h

@@ -22,10 +22,10 @@
 #include <fstream>
 #include <iostream>
 
-// Ensures backward compatibility for FP8 types in RCCL 2.24.3 and later
-#if NCCL_VERSION_CODE >= NCCL_VERSION(2,24,3)
-  #define ncclFp8E4M3 ncclFloat8e4m3
-  #define ncclFp8E5M2 ncclFloat8e5m2
+// Ensures backward compatibility for FP8 datatypes
+#if NCCL_VERSION_CODE < NCCL_VERSION(2,24,3)
+  #define ncclFloat8e4m3 ncclFp8E4M3
+  #define ncclFloat8e5m2 ncclFp8E5M2
 #endif
 
 // For nccl.h < 2.13 since we define a weak fallback

projects/rccl-tests/verifiable/verifiable.cu

@@ -27,10 +27,10 @@
 #else
   #define HAVE_ncclfp8_HOST 1
 #endif
-// Ensures backward compatibility for FP8 types in RCCL 2.24.3 and later
-#if NCCL_VERSION_CODE >= NCCL_VERSION(2,24,3)
-  #define ncclFp8E4M3 ncclFloat8e4m3
-  #define ncclFp8E5M2 ncclFloat8e5m2
+// Ensures backward compatibility for FP8 datatypes
+#if NCCL_VERSION_CODE < NCCL_VERSION(2,24,3)
+  #define ncclFloat8e4m3 ncclFp8E4M3
+  #define ncclFloat8e5m2 ncclFp8E5M2
 #endif
 #else
   #define HAVE_ncclfp8 0