Simple GPU Calc

a simple c code, that loop of print a calculation from cuda cpu

Goal

We’ll do this:

result[i] = rand(i) * i

on the GPU, and print it from the CPU.

Requirement

• NVIDIA GPU

• CUDA Toolkit installed

• Compile with: nvcc gpu_calc.cu -o gpu_calc

What This Does:

Generates a simple random float on GPU using a seed and the index.

Multiplies it by the index (r * i).

Copies results back to CPU.

Prints the first 10 results.

Why It's Faster:

Each index calculation runs in its own GPU thread, in parallel.

Best for large N (e.g., millions of items).

Avoids slow printf() inside GPU.