The information in the table below is composed from the "Intel® Processor Identification and the CPUID Instruction" and the official Intel® product information source.

For identifying a particular processor, please use the Intel® Processor Identification Utility for Microsoft® Windows^TM operating systems or the bootable version for other operating systems[2].

Notes

• The -EP suffix denotes a Dual Processor, meaning this processor is designed to operate in a Dual Processor platform (but can still operate in a Single Processor platform). The -EX suffix denotes a Multi-Processor (MP), meaning this processor is designed to operate in a Multiprocessor platform, but can still operate in a Single or Dual processor platform configuration.
• The Family number is an 8-bit number derived from the processor signature by adding the Extended Family number (bits 27:20) and the Family number (bits 11:8). See section 5.1.2.2 of the "Intel Processor Identification and the CPUID Instruction".
• The Model number is an 8 bit number derived from the processor signature by shifting the Extended Model number (bits 19:16) 4 bits to the left and adding the Model number (bits 7:4) . See section 5.1.2.2 of the "Intel Processor Identification and the CPUID Instruction".

IA-32 Architecture refers to systems based on 32-bit processors generally compatible with the Intel Pentium® II processor, (for example, Intel® Pentium® 4 processor or Intel® Xeon® processor), or processors from other manufacturers supporting the same instruction set, running a 32-bit operating system.

Intel® 64 Architecture (formerly Intel® EM64T)refers to systems based on IA-32 architecture processors which have 64-bit architectural extensions, (for example, Intel® Core™2 processor family), running a 64-bit operating system such as Microsoft Windows Vista* x64 or a Linux* "x86_64" variant. If the system is running a 32-bit  operating system, then IA-32 architecture applies instead. Systems based on AMD* processors running a 64-bit operating system are also supported by Intel compilers for Intel® 64 architecture applications.

64-bit computing on Intel architecture requires a computer system with a processor, chipset, BIOS, operating system, device drivers and applications enabled for Intel® 64 architecture. Performance will vary depending on your hardware and software configurations. Consult with your system vendor for more information.

IA-64 Architecture refers to systems based on the Intel® Itanium® processor running a 64-bit operating system.

Optimization Notice

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice. Notice revision #20110804

Page Contents:

• Intel® Math Kernel Library use with C and Fortran languages. Calling LAPACK, BLAS, and CBLAS routines from C language environments.
• How to Call BLAS Functions that Return the Complex Values in C/C++ Code
• Example 1: Calling a Complex BLAS Level 1 Function from C
• Example 2: Calling a Complex BLAS Level 1 Function from C++
• Example 3: Using the CBLAS Interface Instead of Calling BLAS Directly from C Programs

result = cdotc( n, x, 1, y, 1 )

cblas_cdotu( n, x, 1, y, 1, &result )