HASWELL MICROARCHITECTURE PDF

SST-enabled SKUs come with additional controls that allow system administrators to change the turbo and base frequencies of certain cores. Those cores called prioritized cores can then have certain applications with higher priority affinitized to them. This can be furthered improved by reducing the frequencies of lower-priority cores below their pre-defined base frequencies. In other words, SST allows for higher performance for priority workloads through the sacrifice of lower-priority workloads.

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SST-enabled SKUs come with additional controls that allow system administrators to change the turbo and base frequencies of certain cores. Those cores called prioritized cores can then have certain applications with higher priority affinitized to them. This can be furthered improved by reducing the frequencies of lower-priority cores below their pre-defined base frequencies.

In other words, SST allows for higher performance for priority workloads through the sacrifice of lower-priority workloads. NFV SKUs also feature speed select profiles with configurable priority based on the kind of workloads that are running. Search Application Value specialized[ edit ] The search-optimized SKU is mainly designed for cloud search applications.

Those models are designed such that they have predictable performance and latencies. There is one new search-optimized SKUs. PMMs are designed to improve the overall data center system performance by bringing a larger amount of data closer to the processor, in terms of latency, but behind DRAM. They allow cache line access i. Although the instructions to support persistent memory were already introduced in Skylake , Cascade Lake can now actually make use of them.

The bare minimum for persistent memory support can be realized by simply putting the data in the write pending queue WPQ of the integrated memory controller within the persistence domain. The persistence domain is a unique checkpoint. This is shown in the diagram on the right in the bottom dotted box. Regardless of where it is, the platform is required to store enough energy e. Encryption[ edit ] PMM Encryption One of the unique problems associated with persistent memory is the security of the persistent data itself.

There are two supported modes. The first one is memory mode where the DIMM is treated like DRAM memory one big cache and as such, the key is regenerated each boot and data is lost on a power cycle. The second mode is App Direct which keeps the key on a power cycle. In this mode, the passphrase must be securely stored to unlock the data. Interestingly, one of the features that are currently missing is support for any form of virtualization.

Currently, in a virtualized environment, the DIMM is unlocked using a single passphrase meaning the host has access to all the data. UPI is a high-efficiency coherent interconnect for scalable systems, allowing multiple processors to share a single shared address space.

Depending on the exact model, each processor can have either two or three UPI links connecting to the other processors. Depending on the exact model, Cascade Lake processors can scale from 2-way all the way up to 8-way multiprocessing. Note that the high-end models that support 8-way multiprocessing also only come with three UPI links for this purpose while the lower end processors can have either two or three UPI links.

Below are the typical configurations for those processors.

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Haswell (microarchitecture)

Performance varies depending on system configuration. Check with your system manufacturer or retailer or learn more at www. All information provided here is subject to change without notice. Contact your Intel representative to obtain the latest Intel product specifications and roadmaps. Software and workloads used in performance tests may have been optimized for performance only on Intel microprocessors. Performance tests, such as SYSmark and MobileMark, are measured using specific computer systems, components, software, operations and functions. Any change to any of those factors may cause the results to vary.

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Intel’s Haswell CPU Microarchitecture

Was this article helpful? Performance varies depending on system configuration. Check with your system manufacturer or retailer or learn more at www. All information provided here is subject to change without notice. Contact your Intel representative to obtain the latest Intel product specifications and roadmaps. Software and workloads used in performance tests may have been optimized for performance only on Intel microprocessors.

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