# Christofari

> supercomputer

**Wikidata**: [Q85035383](https://www.wikidata.org/wiki/Q85035383)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Christofari)  
**Source**: https://4ort.xyz/entity/christofari

## Summary
Christofari is a Russian supercomputer designed for artificial intelligence workloads. It is an NVIDIA-built DGX-2 class system operated by Cloud.ru, located in Moscow, and first entered service in 2019.

## Key Facts
- Christofari is a supercomputer operated by Cloud.ru and located in Moscow, Russia.  
- Manufacturer listed as Nvidia; system stated as "Christofari - NVIDIA DGX-2" (Top500 system id 179778).  
- Inception and service entry year: 2019.  
- CPU: Intel Xeon Platinum 8168 24C, stated as Xeon Platinum 8168 24C 2.7 GHz (24 cores per CPU).  
- Interconnect / bus: Mellanox InfiniBand EDR.  
- GPUs: system description includes NVIDIA Tesla V100 (as part of the stated system configuration).  
- Peak (Rpeak) performance: 8.79 petaflops; measured (Rmax) performance: 6.67 petaflops (Top500).  
- Storage capacity: 112,500 gigabytes (112.5 TB).  
- Operating system: Ubuntu 18.04.1 LTS.  
- TOP500 identifier: 179778; Top50 system id: 5849.  
- Documented processor core counts include 99,600 cores (Top500 listing) and an alternate value of 3,600 cores (top50.supercomputers.ru).

## FAQs
### Q: What is Christofari used for?
A: Christofari is used for artificial intelligence workloads. The system is described specifically with "use: artificial intelligence" in its documentation.

### Q: Who built and operates Christofari?
A: The system is identified as an NVIDIA DGX-2 class configuration (manufacturer: Nvidia) and is operated by Cloud.ru.

### Q: How fast is Christofari?
A: Christofari has a reported Rpeak of 8.79 petaflops and an Rmax of 6.67 petaflops according to its Top500 entry.

### Q: Where and when did Christofari enter service?
A: Christofari is located in Moscow, Russia, and its inception/service entry is recorded as 2019.

### Q: What interconnect and OS does it use?
A: The system uses Mellanox InfiniBand EDR for interconnect and runs Ubuntu 18.04.1 LTS.

## Why It Matters
Christofari is a high-performance, DGX-2 class supercomputer targeted at artificial intelligence workloads and recorded on major system lists such as TOP500 and national/top50 registries. As a system combining NVIDIA Tesla V100 accelerators, Intel Xeon Platinum CPUs, and a high-speed Mellanox InfiniBand EDR fabric, it represents a complete AI-focused cluster configuration used by an operator in Russia (Cloud.ru). Its presence on TOP500 and regional Top50 lists documents its role in the international supercomputing landscape and provides a measurable baseline of AI-oriented computational capacity (Rpeak 8.79 PFLOPS, Rmax 6.67 PFLOPS). The system's large storage footprint (112.5 TB) and public identifiers (Top500 id 179778, Top50 id 5849) make it a notable resource for organizations tracking national HPC capabilities and for teams requiring large-scale AI training and inference platforms.

## Notable For
- Being deployed as an NVIDIA DGX-2 class system configured with NVIDIA Tesla V100 accelerators.  
- Appearing on the TOP500 list (Top500 system id 179778) with an Rpeak of 8.79 petaflops and Rmax of 6.67 petaflops.  
- Use of Mellanox InfiniBand EDR interconnect paired with Intel Xeon Platinum 8168 24-core CPUs.  
- Operated by Cloud.ru and located in Moscow, Russia, with service entry in 2019.  
- Substantial stated storage capacity of 112,500 gigabytes (112.5 TB).

## Body

### Overview
- Instance: supercomputer.  
- Name: Christofari.  
- Country / location: Russia; located in Moscow.  
- Operator: Cloud.ru.  
- Inception / service entry: 2019.  
- Named after: item Q4241304 (Wikidata reference).

### Hardware — CPUs and accelerators
- CPU model: Intel Xeon Platinum 8168 24C, stated as 2.7 GHz and 24 cores per CPU.  
- GPUs: System listing includes NVIDIA Tesla V100 accelerators as part of the stated configuration.  
- Processor core counts reported: 99,600 cores (Top500 source) and an alternate value of 3,600 cores (top50.supercomputers.ru).

### Interconnect and storage
- Interconnect / bus: Mellanox InfiniBand EDR.  
- Storage capacity: 112,500 gigabytes (112.5 TB).

### Performance and rankings
- Peak theoretical performance (Rpeak): 8.79 petaflops (Top500).  
- Measured LINPACK performance (Rmax): 6.67 petaflops (Top500); an alternate reported Rmax is given as 6,669 teraflops on a regional listing.  
- TOP500 identifier: 179778 (stated system description: "Christofari - NVIDIA DGX-2, Xeon Platinum 8168 24C 2.7GHz, Mellanox InfiniBand EDR, NVIDIA Tesla V100").  
- Top50 system id: 5849 (stated as "Кристофари").  
- Recorded TOP500/Top50 ranks over time include: rank 29 (TOP500, 2019-11), rank 72 (TOP500, start_time 2021-11), rank 142 (TOP500, 2024-06), rank 172 (TOP500, point_in_time 2024-11), and rank 5 in the Top50 list (point_in_time 2023-03-28).

### Software and system software
- Operating system: Ubuntu 18.04.1 LTS.

### Identification and metadata
- Top500 system id: 179778.  
- Top50 system id: 5849.  
- Commons category: "Christofari supercomputer".  
- Google Knowledge Graph id: /g/11j0v0zxr6.  
- Industry / use: listed as industrial sector and used for artificial intelligence.

### References recorded in source data
- Primary cataloging and ranking entries originate from Top500 (system id 179778) and the regional/top50 listing (top50.supercomputers.ru, system id 5849).

## References

1. [Source](https://www.top500.org/site/50820/)
2. [Source](https://top50.supercomputers.ru/systems/5849)
3. [TOP500](https://www.top500.org/system/179778)
4. [2023](https://top50.supercomputers.ru/list)