diff --git a/samples/nvcuda/common.mk b/samples/nvcuda/common.mk
index 54c2808399..06d7638458 100644
--- a/samples/nvcuda/common.mk
+++ b/samples/nvcuda/common.mk
@@ -31,7 +31,7 @@ OSARCH= $(shell uname -m)
 # Basic directory setup for SDK
 # (override directories only if they are not already defined)
 SRCDIR     ?= 
-ROOTDIR    ?= ..
+ROOTDIR    ?= /home/tuanle/NVIDIA_GPU_Computing_SDK
 
 # ROOTDIR/bin is the directory where executable file will be put in
 
@@ -45,9 +45,9 @@ BOINC_API_DIR = $(BOINC_DIR)/api
 BOINC_LIB_DIR = $(BOINC_DIR)/lib
 
 # Directory for cutil_i386 as well as other utils while linking (-lcutil_i386)
-LIBDIR     := /home/tuanle/NVIDIA_GPU_Computing_SDK/C/lib             
-COMMONDIR  := /home/tuanle/NVIDIA_GPU_Computing_SDK/C/common
-SHAREDDIR  := /home/tuanle/NVIDIA_GPU_Computing_SDK/shared
+LIBDIR     := $(ROOTDIR)/C/lib             
+COMMONDIR  := $(ROOTDIR)/C/common
+SHAREDDIR  := $(ROOTDIR)/shared
 
 # Compilers
 NVCC       := $(CUDA_INSTALL_PATH)/bin/nvcc 
@@ -238,7 +238,7 @@ endif
 
 ifeq ($(USENVCUVID), 1)
      ifneq ($(DARWIN),)
-         NVCUVIDLIB := -L/home/tuanle/NVIDIA_GPU_Computing_SDK/C/common/lib/darwin -lnvcuvid
+         NVCUVIDLIB := -L$(ROOTDIR)/C/common/lib/darwin -lnvcuvid
      endif
 endif
 
diff --git a/samples/nvcuda/cuda.cu b/samples/nvcuda/cuda.cu
index a639fdafbc..7928e71706 100644
--- a/samples/nvcuda/cuda.cu
+++ b/samples/nvcuda/cuda.cu
@@ -141,7 +141,6 @@ int main(int argc, char** argv)
     double fd;
     char input_path[512], output_path[512], chkpt_path[512], buf[256];
     REAL* h_idata;
-    unsigned int mem_size;
     MFILE out;
     FILE* state, *infile;
     
diff --git a/samples/nvcuda/readme.txt b/samples/nvcuda/readme.txt
index bce264dc0c..5334bedc8e 100644
--- a/samples/nvcuda/readme.txt
+++ b/samples/nvcuda/readme.txt
@@ -3,6 +3,10 @@ University of California, Berkeley
 Berkeley Space Sciences Lab
 tuanle86@berkeley.edu
 
+----------------------- Compiler ----------------------------
+
+You will need to install gcc 4.3 and g++ 4.3. It appears that Cuda 3.0 SDK has not yet worked
+with gcc 4.4 and g++ 4.4
 
 ----------------------- Linux Makefile ----------------------
 
@@ -11,16 +15,9 @@ Makefile needs to be edited on your machine before running. Please follow these
 1) Open "boinc/samples/nvcuda/common.mk" with gedit
 2) Ctrl+f and search for "tuanle". You will find the following:
 
-LIBDIR     := /home/tuanle/NVIDIA_GPU_Computing_SDK/C/lib
-
-COMMONDIR  := /home/tuanle/NVIDIA_GPU_Computing_SDK/C/common
+ROOTDIR  ?= /home/tuanle/NVIDIA_GPU_Computing_SDK
 
-SHAREDDIR  := /home/tuanle/NVIDIA_GPU_Computing_SDK/shared
-...
-...
-NVCUVIDLIB := -L/home/tuanle/NVIDIA_GPU_Computing_SDK/C/common/lib/darwin -lnvcuvid
-
-3) Replace these above paths by appropriate paths on your machine.
+3) Replace this path by appropriate path on your machine.
 4) Done!