This namespace defines pricing models for Golem computation resources.
golem.com.pricing.model : StringType of pricing function describing the pricing model.
Important: The pricing models described by this namespace meet one fundamental condition: they need to be expressed by a ‘pricing function’:
price = p(usage_vector)
where usage_vector is a vector of usage counter values (numbers) accumulated during Activity execution, and price is a scalar value.
The p(u) can be ultimately any function, however this namespace defines a set of sub-classes of relatively simple yet useful pricing functions which can be described by concise sets of attributes/parameters.
| Value | Description | | ——– | ————————————————- | | “linear” | Price is a linear function of vector of counters. | | … | … |
golem.com.pricing.model.linear.coeffs : List[Number]Property to express coefficients for the linear pricing function.
A linear pricing function is a function of following form:
price = [counter_1, …, counter_n, 1] X [coeff_1, …, coeff_n, coeff_fixed]T
To define a linear pricing function of n-counter usage vector, it is required to specify the numeric coefficients to be multiplied by respective counter values of a usage vector, plus a fixed coefficient.
golem.com.pricing.model="linear" - Declares a linear pricing model (with prameters indicated via golem.com.pricing.model.linear.* properties).golem.com.pricing.model.linear.coeffs=[0.3, 0] - For a 1-counter usage vector (eg. golem.usage.vector=["golem.usage.duration_sec"]) the price is calculated as: price = 0.3 * golem.usage.duration_sec.