Libmklccgdll 2021

| Attribute | Value | |-----------|-------| | Full filename | libmklccgdll.dll | | Version | 2021.x.x (e.g., 2021.1.1, 2021.4.0) | | Architecture | x64 (also x86 for 32-bit) | | Digital signature | Intel Corporation | | Dependencies | libmkl_core.dll, KERNEL32.dll, VCRUNTIME140.dll | | Typical size | ~2–3 MB |

MATLAB’s linear algebra functions (e.g., \, eig, svd) are built on Intel MKL. The particular DLL version depends on MATLAB’s release. R2020b and later often use MKL 2021.

libmklccgdll 2021 is specifically intended for users who:

Example linking command (GCC):

g++ myapp.c -I"%MKLROOT%\include" -L"%MKLROOT%\lib\intel64" \
    -lmkl_core -lmkl_gnu_thread -lmkl_ccg_dll -lopensp-mt

The 2021 version introduces better compatibility with: libmklccgdll 2021

A simple DGEMM (matrix multiplication) benchmark using libmklccgdll 2021 can achieve over 90% of peak floating-point performance on an Intel Xeon Gold 6252.

Date: April 19, 2026
Category: Security / Software Forensics

A seemingly technical file name – libmklccgdll 2021 – has appeared in scattered forum posts, log files, and user queries over the past year. Developers and security analysts are asking: Is this a legitimate Intel MKL component? A typo? Or a malware impersonation?

After cross-referencing Intel’s official documentation for Intel® oneAPI Math Kernel Library (oneMKL) versions 2021–2026, we can state with confidence: | Attribute | Value | |-----------|-------| | Full

There is no official file named libmklccgdll (with or without a space, with or without 2021) in any genuine Intel MKL distribution.

Cause : Bitness mismatch. Your application is 32-bit but the DLL is 64-bit, or vice versa.
Solution : Match architectures. The 64-bit version of libmklccg.dll is in the intel64 subfolder; the 32-bit version is in ia32.

When distributing an application that uses libmklccgdll 2021, include the following files (from %MKLROOT%\redist\intel64\mkl):

Search order on Windows:

Common error:
The code execution cannot proceed because libmklccgdll.dll was not found.

Solution: Ensure the redistributable DLLs are present in the same folder as the executable, or add the MKL redist path to PATH.

Unlike a typical stand-alone DLL, libmklccgdll 2021 is distributed as part of the Intel MKL installer. You cannot legally download the DLL in isolation from a third-party site; it must come from Intel’s official channels.