
Perform 4D tensor-matrix multiplication of two tensors:
$$
C[b][i][j][k] = \sum_{l=0}^{L-1} A[b][i][j][l] \cdot B[l][k]
$$

## Input
- Tensor $A$ of size $B \times I \times J \times L$
- Matrix $B$ of size $L \times K$

## Output
- Tensor $C$ of size $B \times I \times J \times K$

## Notes:
- All tensors $\text{A}$, $\text{B}$, and $\text{C}$ are stored in row-major order
- This problem is adapted from [KernelBench](https://github.com/ScalingIntelligence/KernelBench/blob/main/KernelBench/level1/11_4D_tensor_matrix_multiplication.py)

Rank	User	Runtime (ms)	GPU	Date
1	sqdshguy	0.71	B200	2 months ago
2	Gusanidas	0.75	H100	about 2 months ago
3	sagarreddypatil	0.97	H100	9 months ago
4	648trindade	1.57	B200	5 months ago
5	648trindade	1.74	H100	6 months ago
6	648trindade	1.76	H200	6 months ago
7	Firojpaudel	2.20	H100	9 months ago
8	a-hamdi	2.42	H100	9 months ago
9	harmya	2.83	H100	10 months ago
10	Gusanidas	4.97	T4	about 2 months ago
11	codingwithsurya	5.94	H100	6 months ago
12	Firojpaudel	18.66	T4	9 months ago
13	a-hamdi	20.15	T4	9 months ago
14	harmya	23.01	T4	10 months ago
15	pan-samuel	33.22	B200	4 months ago
16	ShlokVFX	33.70	H100	9 months ago