restore context to 4096 for perf test standard

Author: arthw

examples/sycl/run-llama2.sh

@@ -13,7 +13,7 @@ source /opt/intel/oneapi/setvars.sh
 INPUT_PROMPT="Building a website can be done in 10 simple steps:\nStep 1:"
 MODEL_FILE=models/llama-2-7b.Q4_0.gguf
 NGL=33
-CONEXT=8192
+CONEXT=4096
 
 if [ $# -gt 0 ]; then
     GGML_SYCL_DEVICE=$1