Updated Tested Config, Known Limitations sections

README

@@ -122,10 +122,17 @@ compilation of OpenCL kernels, but they are also used on the device selection.
    =================
 - Intel CPUs are not supported
 - Intel GPUs are not supported
-- The current implementation is not compatible with OpenCL devices that are not using warp/wavefronts or for which the warp/wavefront size is not a multiple of 32
+- The current implementation is not compatible with OpenCL devices that are
+  not using warp/wavefronts or for which the warp/wavefront size is not a
+  multiple of 32
 - The following kernels are known to produce incorrect results:
 	nbnxn_kernel_ElecEwQSTab_VdwLJ_VF_prune_opencl
 	nbnxn_kernel_ElecEwQSTab_VdwLJ_F_prune_opencl
+- Due to blocking behavior of clEnqueue functions in NVIDIA driver, there is
+  almost no performance gain when using NVIDIA GPUs. A bug report has already
+  been filled on about this issue. A possible workaround would be to have a
+  separate thread for issuing GPU commands. However this hasn't been implemented
+  yet.	
 
 5. TESTED CONFIGURATIONS
    =====================
@@ -145,6 +152,11 @@ nbnxn_kernel_ElecRF_VdwLJ_F_opencl              |adh_cubic with rf_verlet.mdp
 nbnxn_kernel_ElecRF_VdwLJ_F_prune_opencl        |adh_cubic with rf_verlet.mdp                   |
 nbnxn_kernel_ElecEwQSTab_VdwLJ_VF_prune_opencl  |adh_cubic_vsites with pme_verlet_vsites.mdp    |Failed
 nbnxn_kernel_ElecEwQSTab_VdwLJ_F_prune_opencl   |adh_cubic_vsites with pme_verlet_vsites.mdp    |Failed
+nbnxn_kernel_ElecEw_VdwLJ_VF_prune_opencl       |adh_cubic_vsites with pme_verlet_vsites.mdp	|
+nbnxn_kernel_ElecEw_VdwLJ_F_opencl              |adh_cubic_vsites with pme_verlet_vsites.mdp	|
+nbnxn_kernel_ElecEw_VdwLJ_F_prune_opencl        |adh_cubic_vsites with pme_verlet_vsites.mdp	|
+nbnxn_kernel_ElecEwTwinCut_VdwLJ_F_prune_opencl	|adh_cubic_vsites with pme_verlet_vsites.mdp	|
+nbnxn_kernel_ElecEwTwinCut_VdwLJ_F_opencl       |adh_cubic_vsites with pme_verlet_vsites.mdp    |
 
 Input data used for testing - Benchmark data sets available here:
 ftp://ftp.gromacs.org/pub/benchmarks